Merfolk are one of several factions represented in The Lost Caverns of Ixalan. Ever since the very first set of Magic, Merfolk have had a lot of support and Caverns only continues that. The blue and green deck Explorers of the Deep is a Merfolk typal deck with explore and +1/+1 counters sub-themes. Let’s take a look at the commanders and some of the new cards.
A Very Solid Looking Commander

Wow, this card is straight up good! Hackbal of the Surging Soul does something right away and generates both value and synergy. While there is no shortage of +1/+1 decks for Commander, this one is easily very thematic and does allow you to make some different choices. For example, the deck includes both
Merfolk Skydiver

When this creature enters, put a +1/+1 counter on target creature you control.
{3}{G}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
and
Evolution Sage

The other alternative commander Xolatoyac, the Smiling Flood is certainly different. Slapping a
Wilderness Reclamation



Commander Staples and new Staple Like Cards

The last couple of years have shown that Wizards has improved the formula for pre-cons. If you look at the deck list for Explorers of the Deep there are eight super staple cards in the EDHRec top 100. On top of that, the land base has been continually improving for pre-cons with better dual lands like
Hinterland Harbor

{T}: Add {G} or {U}.
. Furthermore, you get a nice reprint in
Kindred Discovery

Whenever a creature you control of the chosen type enters or attacks, draw a card.
which doubles everything you are doing Merfolk wise while also getting double counters from another excellent and valuable re-print
Branching Evolution

On top of that, newer pre-cons always feature board wipes, board wipe protection and at least one wipe that is one sided.
Wave Goodbye


More is Better

Once you have a couple of Merfolk in play alongside Hakbal, Nicanzil is your next best draw. Not only is it going to be a huge creature almost instantly, it will also ramp you considerably. All this for only two mana is too good in this deck and is an invaluable piece of the deck’s engine.
Even More is even Better

Of course with Hakbal and Nicanzil in play you’ll really want to have
Topography Tracker

If a creature you control would explore, instead it explores, then it explores again.
. Having double explore and free land drops together is criminally powerful and this deck is built with these combinations in mind. You also have
Merfolk Cave-Diver

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Wipe Protection with a Massive, Unintentional Upside

The next piece of the puzzle is
Ripples of Potential

Power on top of Power

Ever felt the need to do even more damage, and fly?
Mist Dancer

Other Merfolk you control get +1/+0 and have flying.
Encore {5}{U}{U} ({5}{U}{U}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)
has you covered. But the real ability is the fact this card has Encore. Giving all your other Merfolk +3/+0 and flying for a final attack is definitely going to be enough to win a lot of games. As is, the card is a little expensive on the mana side, but as a finisher from beyond the grave it’s just right.
It is a Blue Deck After all…

We all know blue likes to sit there with mana open, threatening counter magic or a response. With Singer of Swift Rivers you can play the deck exactly like that. A save spell that also gives all your Merfolk flash for only three mana, this is a very decent include. Additionally, it leans into the proliferate angle of the deck because you can get a pile of shield counters on what you want to protect the most.
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…but also Green!

As far as large green monsters goes, this deck does not really do that. However, Tributary Instructor is one of your larger bodies that will help grow someone else. It also greatly improves your odds of rebuilding if your board does happen to get reset and is worth a slot in the deck as is.
Some Interesting Recursion

Alongside another new card, Byegone Marvels, Deeproot Historian gives you easy recursion for any Merfolk or Druid. It’s an interesting card to include and the cost is a bit high, but it will allow you to get back all of your best creatures by discarding a land. Useful, but maybe not necessary.
The same can be said for Byegone Marvels. It’s a very interesting card for a different deck, but here, it seems like spending two mana to get back up to three Merfolk is not where this card will be best utilized. However, as a triple strength [toolrips]Regrowth[/tooltips] effect, it will surely see play in other decks to make combos happen.
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Missing Cards

Doing a quick search, you find three different Merfolk that explore with Jadelight Ranger being the strongest of them. Why is it missing from Explorers of the Deep? The mana base for the deck is reasonable, so a double green costed three drop should not be too hard to cast. I can understand both Tishana’s Wayfinder and [/tooltips]Merfolk Branchwalker[/tooltips] simply doing too little, but a double explore trigger seems too worthwhile to not include. This is a bit perplexing of a non-include to be honest.
Many others will likely comment on Wildgrowth Walker being absent from the deck. Sure, it will get big really quickly in this deck and does have nice synergy as an alternate win condition but, at the end of the day, it’s not a Merfolk, and it won’t be unblockable. The deck does include Zegana, Utopian Speaker, so you could have a supersized Walker with trample fairly easily.
I think Abundance will be a very powerful card for the deck because it will enable you to improve your explore odds throughout the course of a game. Sure, explore is not a draw trigger, but many of the cards in the deck are, and there is obvious big synergy to be had here.
On a relatively obvious note, there are plenty of Merfolk lords that could have been included. The thing is not as many work with the +1/+1 or explore theme so being left out does make some sense. Many players will simply modify their deck though.
A Very Decent Looking Deck
Found above are 89 of the 90 reprints for the MTG Explorers of the Deep deck. Merfolk Cave-diver, a new Explorers of Ixalan card from the main set, rounds out the missing card. All four of the Commander preconstructed decks this time around have some fantastic reprints.
On the surface it looks like Explorers has a decent mana curve, a good commander, and a very synergistic game plan. The deck includes the common Commander staples you would expect it to have to function on its own and to interact with other decks. There is plenty of value in reprints from Branching Evolution, Kindred Discovery and even Metallic Mimic. At around $40 as a pre-order, this is an easy purchase if you’re looking for a deck with Merfolk or proliferate synergy.
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