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Because Who Doesn’t Love ETB Effects!?

Commander / EDH Combo Infinite Combo Mono-Blue Tempo

Feebs24


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This deck uses the returning legend from Theros Beyond Death, Thassa, Deep-Dwelling, to abuse powerful etb abilities so slow down her opponents and eventually win by an infinite combo or by simply grinding them out. The deck definitely isn't perfect and I am glad to look over any suggestions in the comments. Thank you. The rest of the description is a rundown of how the deck works and the main way it wins, so keep reading if you're interested.
The deck can be complex at times but the main plan mostly stays the same. You want to slow your opponents down as much as you can and get as much value from your etb effects as you can and hold off until you can assemble your infinite. The main combo is to have an Archaeomancer / Scholar of the Ages with a Displace / Ghostly Flicker and a land untap creature like Great Whale, Peregrine Drake, or Palinchron (or Cloud of Faeries if you have a Panharmonicon). Once you have the three of them, phase 1 (infinite mana phase) of the combo begins. The loop can look a little like this...
1- Cast Displace targeting Archaeomancer and Great Whale -
2- Great Whale will flicker and untap 7 lands. If most of your lands are already untapped here, tap them in response to the trigger to float the mana +
3- Archaeomancer will flicker and the trigger to bring back an instant or sorcery will bring back the Displace
4- Recast Displace for 3 mana, and gain 7 mana with Great Whale
5- Repeat
This can be looped forever to gain you infinite mana. Then, once you have infinite mana, phase 2 of the combo will begin. For this, you will need any creature that allows you to draw a card from your deck (which the deck has a lot of), for this example we will use Sea Gate Oracle. This will begin phase 2 (infinite draw phase) of the combo.
Basically, you want to do the exact combo from earlier, except instead of flickering a land untap creature, you flicker the creature to draw cards.
1- Cast Displace targeting Archaeomancer and Sea Gate Oracle
2- Sea Gate Oracle will flicker and you will put a card from your library into your hand
3- Archaeomancer will flicker and the trigger to bring back an instant or sorcery will bring back the Displace
4- Repeat this process until you have found a win-con (See below)
Then, you are drawing from your deck until you get one of three things, a Thassa's Oracle, a Time Warp, or an Agent of Treachery. Once you find one of these, phase 3 (win game phase) begins. Thassa's Oracle is pretty self-explanatory; cast a bunch of cards and then cast Thassa's Oracle to win the game. If you find an Agent of Treachery, do the same combo from earlier, except replace the Great Whale / Sea Gate Oracle with the Agent of Treachery
1- Cast Displace targeting Archaeomancer and Agent of Treachery
2- Agent of Treachery will flicker and you will steal a permanent from your opponents
3- Archaeomancer will flicker and the trigger to bring back an instant or sorcery will bring back the Displace
4- Repeat this process until you have stolen all of your opponents permanents (Yes, even the lands too Mwahaha).
From there, killing them should be easy as you can continue to steal their permanents every turn, effectively keeping them on one mana forever if they hit constant land drops. The other (and way easier) way to kill your opponents is with Time Warp. However, to win this way you need to find either a Panharmonicon to pair with your Archaeomancer, or just have a card:Scholar of Ages (Which should be easy to find since you can draw as many cards as you want), because you will need to be getting back 2 instants/sorceries per flicker.
1- Cast Time Warp
2- Flicker the card:Archeomancer / card:Scholar of Ages with any flicker spell
3- With their etb trigger, return the Time Warp and the flicker spell to your hand
4- Recast the Time Warp and take infinite turns
4.5- Use Thassa, Deep-Dwelling's ability to tap down all of your opponents creatures if needed (or just cast Sleep or Tempest Caller if opponents have hexproof)
Once you have assembled this combo you never let your opponents have another turn and you can simply beat them down with your creatures slowly and painfully (or they just concede because they see you're taking INFINITE TURNS)
But, it all changes once you get Panharmonicon or Naban, Dean of Iteration out. If you can land a Panharmonicon and have it stay, your combo potential widens up a considerable amount. For starters, you might not even need a flicker spell or a creature to return your land untapper. This is due to Palinchron having a nifty ability to bounce itself, making infinite mana just by itself (and Panharmonicon). You can also somewhat copy this ability with a Great Whale, Peregrine Drake, or Cloud of Faeries if you also have an AEther Adept or Man-o'-War. They can bounce both themselves and the land untapper due to its ability being copied. Honestly, if you have a Panharmonicon out, you now gain at least a few dozen more ways to initiate the combo, which is too many for me to talk about here.
There is a lot more to the deck than meets-the-eye, it is a fun tempo deck with a sweet combo win. What more is there to ask for? Pair it with the best god from Theros and you have an awesome deck. I plan on tweaking the deck until I think I have perfected it, but until then I will gladly look over suggestions for cards. Thank you for sticking with me through the whole rundown and I hope that you all have a great rest of your day. :)

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Casual

92% Competitive

Date added 4 years
Last updated 3 years
Legality

This deck is Commander / EDH legal.

Rarity (main - side)

2 - 0 Mythic Rares

19 - 0 Rares

19 - 0 Uncommons

29 - 0 Commons

Cards 100
Avg. CMC 2.98
Tokens Champion of Wits 4/4 B, Copy Clone, Frog Lizard 3/3 G
Folders Ideas, Interessant, Cool Decks
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