Deck Guide: Thassa, Deep-Dwelling Brawl

Hello, there! Today we’ll show you our Brawl decklist for Thassa, Deep-Dwelling. We will take advantage of this blue god’s abilities and pair it with powerful creatures. This deck is great for anyone who likes playing sweet creatures and blue deck without counterspells.

First things first – here’s the decklist. You can export it to MTG Arena by clicking the button in the top right corner.

1 Thassa, Deep-Dwelling (THB) 71
1 Cloudkin Seer (M20) 54
1 Thassa's Oracle (THB) 73
1 Cavalier of Gales (M20) 52
1 Dream Eater (GRN) 38
1 Agent of Treachery (M20) 43
1 Mesmerizing Benthid (RNA) 43
1 Gadwick, the Wizened (ELD) 48
1 Syr Elenora, the Discerning (ELD) 67
1 Fblthp, the Lost (WAR) 50
1 Meteor Golem (M20) 232
1 Tome Raider (ELD) 68
1 Dungeon Geists (M20) 57
1 Emry, Lurker of the Loch (ELD) 43
1 Riddlemaster Sphinx (M20) 317
1 Alirios, Enraptured (THB) 42
1 Mu Yanling, Sky Dancer (M20) 68
1 Kiora Bests the Sea God (THB) 52
1 Finale of Revelation (WAR) 51
1 Brazen Borrower (ELD) 39
1 Quasiduplicate (GRN) 51
1 Midnight Clock (ELD) 54
1 Mass Manipulation (RNA) 42
1 Thryx, the Sudden Storm (THB) 76
1 Jace, Wielder of Mysteries (WAR) 54
1 Unsummon (M20) 78
1 Witching Well (ELD) 74
1 Medomai's Prophecy (THB) 53
1 Omen of the Sea (THB) 58
1 Shadowspear (THB) 236
1 Arcane Signet (ELD) 331
1 Altar of the Pantheon (THB) 231
1 Heraldic Banner (ELD) 222
1 Mana Geode (WAR) 241
1 Nyx Lotus (THB) 235
1 Mobilized District (WAR) 249
1 Labyrinth of Skophos (THB) 243
1 Field of Ruin (THB) 242
1 Castle Vantress (ELD) 242
1 Mystic Sanctuary (ELD) 247
1 Blast Zone (WAR) 244
1 Cryptic Caves (M20) 244
1 Emergence Zone (WAR) 245
17 Island (THB) 280

Thassa Brawl Strategy

Thassa Deep-Dwelling Brawl Deck Decklist MTGA

Thassa Brawl deck is bit tricky to build, as a mono blue deck. We wanted to have enough:

  • creatures that synergize with Thassa
  • powerful cards
  • ramp
  • utility lands

Enters-the-Battlefield Effects

To optimally use Thassa, Deep-Dwelling, we need creatures with enter-the-battlefield effects. We can then blink them with Thassa to get their effect again. Blinking (or flickering) is Magic slang for exiling a creature and immediately returning it back.

We have 15 creatures with enter the battlefield effect. But there is one that’s just better than all the others.

Thassa + Agent of Treachery Combo

Thassa’s best friend is surely Agent of Treachery. You play him, steal your opponent’s best permanent and at the end of turn, you blink him with Thassa, steal another thing. Once you do this, you usually just win the game on the spot.

Thassa Agent of Treachery Combo Deck Decklist MTGA

Sadly, you can have only one copy of Agent, but Meteor Golem can also do some work. Some other great creatures to blink with Thassa are:

Powerful Blue Cards

We’re playing some very strong cards for Brawl. We particularly like Kiora Bests the Sea God.

Kiora Bests the Sea God

If you can survive until second chapter, you’ll win the game easily. Of course, 8/8 hexproof Kraken will help you survive for a turn.

When you really want your opponent’s stuff, Mass Manipulation is here to help you. This spell fits perfectly in a blue Brawl deck and is a real powerhouse.

Finale of Revelation and Gadwick, the Wizened will make sure that you’ll never run out of cards. You don’t need to worry about drawing too many of them, since you have two alternate win conditions in Thassa’s Oracle and Jace, Wielder of Mysteries.


As you can see we’re playing a lot of expensive cards. That’s why we need some ramp cards, so we can play them earlier.

Using Your Lands

Since we’re playing a mono-colored deck, we can afford to play more utility lands. That’s why we have 8 of them, including two that also provide blue:

Our mana base includes 17 Islands which gives us 25 lands total, which is a good number for a deck that wants to cast Thassa on turn 4 consistently.

Going Deep

If Thassa Brawl deck isn’t the right fit for you, try some of our other decklist, for example:

Also, make sure that you follow us on Facebook or Instagram, so you won’t miss new decklists, strategy tips and memes.

Anyways, that’s all about Thassa brawl! Until next time, make a big splash with this blue god!

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.