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Sin, Unending Cataclysm

Legendary Creature — Leviathan Avatar

Flying, trample
As Sin enters, remove all counters from any number of artifacts, creatures, and enchantments. Sin enters with X +1/+1 counters on it, where X is twice the number of counters removed this way.
When Sin dies, put its counters on target creature you control, then shuffle this card into its owner's library.

CMC
7
Mana cost
{5}{G}{U}
Color identity
GU
Rarity
rare
Set
Final Fantasy Commander
Price
$0.34
EDHREC rank
#5708
Buy on TCGplayer
Sin, Unending Cataclysm card art
Sin, Unending Cataclysm drops a 35/35 trampler onto the battlefield — the largest base-stat creature in the game — and the only real cost is finding a shell that can cheat it into play without paying its face value. Kenessos, Priest of Thassa does exactly that, top-decking Sin, Unending Cataclysm directly onto the battlefield off a scry trigger, and Body of Research can build a token to match it, but neither of those is as clean as just having a 35/35 swinging on turn four.

Best Commanders

Commanders with the highest synergy

01
Kenessos, Priest of Thassa

Kenessos, Priest of Thassa

45.0% of decks · synergy 0.42

Kenessos, Priest of Thassa is the natural home — his ability puts the top creature of your library directly onto the battlefield tapped and attacking, and Sin, Unending Cataclysm is the single biggest payoff for that effect in the game.

02
Tidus, Yuna's Guardian

Tidus, Yuna's Guardian

41.7% of decks · synergy 0.36

Tidus, Yuna's Guardian is built around the Final Fantasy Aeon creature type, and Sin, Unending Cataclysm is the marquee Aeon — Tidus enables cost reduction and reanimation lines that make casting or recurring Sin, Unending Cataclysm far more achievable.

03
Yuna, Grand Summoner

Yuna, Grand Summoner

37.6% of decks · synergy 0.31

Yuna, Grand Summoner's whole game plan is summoning Aeons, and Sin, Unending Cataclysm is the ultimate payoff she can fetch or cheat into play to close out a game with one unblockable swing.

05
Kros, Defense Contractor

Kros, Defense Contractor

33.4% of decks · synergy 0.27

Kros, Defense Contractor runs Sin, Unending Cataclysm as a political finisher — gifting an opponent a 35/35 with a goad effect turns the table into chaos and frees Kros to close the game while everyone else deals with the monster.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern not legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Commander is the primary home for Sin, Unending Cataclysm — the singleton format rewards having exactly one massive threat that a dedicated cheat-into-play commander can find reliably. Legacy and Vintage legality is technically correct, but a 35-mana creature with no built-in protection is irrelevant in either format without a shell that can put it directly onto the battlefield, and those shells don't exist competitively. Oathbreaker shares Commander's singleton logic and could support Sin, Unending Cataclysm in a similar cheat-out build, though the smaller deck size makes consistency harder. Anywhere that requires you to actually cast it is a non-starter.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.34 bulk tier

At $0.34, Sin, Unending Cataclysm is deep bulk — surprising for a card with a 35/35 stat line and a clear home in multiple popular commanders. The price reflects that it's unplayable without a cheat-in engine, but if you're building Kenessos or a Final Fantasy Aeon deck, picking up Sin, Unending Cataclysm now costs less than a pack of sleeves.

Explore

Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.