Isshin, Two Heavens as One

The interaction

A question that keeps coming up: do Avatar: The Last Airbender attack triggers double under Isshin? Yes, they do, and the confusion around this has been grinding for a while now with cards like Firebender Ascension and Fire Lord Azula showing up in Mardu attack decks.

What it does

Every creature you control that triggers an ability on one of your permanents when it attacks causes that ability to trigger a second time. One attacker, two triggers. Ten attackers, twenty triggers. Isshin doesn't care about the creature itself having the ability, only that your permanent has it, so enchantments like Firebender Ascension and permanents like Éomer, Marshal of Rohan both qualify. The interaction players most often misread: Isshin's text requires the triggered ability to belong to a permanent you control. Opponents' triggers don't double, and abilities on the attacking creature itself are only covered if you also control a permanent with that trigger, which is rarely how they're written.

Where it shines

Token-flood aggro with a damage-on-attack enchantment package. Stack triggers from cards like Éomer, Marshal of Rohan and Firebender Ascension, swing wide with tokens, and watch every trigger fire twice. Roaming Throne pairs as a redundant doubler, which means attack steps can generate three triggers per creature if both are in play. That's not a hypothetical; it's a repeatable win condition.

Plays well with

• Roaming Throne We can play Isshin, Two Heavens as One as a backup to Roaming Throne for even more attack-trigger shenanigans! Doubling and tripling up attack triggers can do some hilariously powerful things.
• Éomer, Marshal of Rohan Isshin, Two Heavens as One, meet Éomer, Marshal of Rohan.
• Fire Lord Azula Leyline of Anticipation: Spiked by Fire Lord Azula, Then Faded. Leyline of Anticipation's
• Firebender Ascension Firebender Ascension slots perfectly into Isshin, Two Heavens as One decks in Commander. It's an attack trigger doubler that takes some time to build up, but also spots you an on-rate firebender to ge
• Wulfgar of Icewind Dale

The catch

Isshin himself is a three-power, three-toughness creature with no protection text, so a single removal spell at the wrong moment collapses your entire engine before combat math even matters. You're investing your game plan in a 3/3 with no built-in resilience.

Featured in

UPGRADE GUIDE Mardu Surge Upgrade Guide: Fix Zurgo Stormrender Fast Isshin, Two Heavens as One shows up in our Mardu Surge Precon - The Definitive Upgrade Guide.