Isshin, Two Heavens as One

Gameplan

Isshin doubles every 'whenever a creature attacks' trigger you control, so you flood the board with attack-triggered permanents and swing for explosive value. Early turns develop ramp and aggressive token/attack-trigger engines, then by midgame each combat generates double the tokens, drains, damage, and card advantage. You win through overwhelming board states, repeated drains, or extra-combat finishers.

Key Cards

• Mardu Ascendancy — Each attack creates double tokens with Isshin, building an army that also fogs lethal swings.
• Hellrider — Doubled damage on attack turns wide boards into direct burn that closes games fast.
• Elturel Survivors — Doubles into making two copies of an attacker, snowballing your board every combat.
• Reconnaissance — Lets attackers untap and dodge blocks/death while keeping attack triggers, a near-perfect Isshin enabler.
• Bloodthirster — Doubled extra-combat triggers can generate chains of additional combat phases for a kill.
• Combat Calligrapher — Forces opponents to block one creature and doubles its trigger, often resulting in mass blocker death.

Upgrade Path

Add efficient tutors and protection (Boros Charm, Teferi's Protection) to keep Isshin safe and find your enablers. Lean into extra-combat combos like Aggravated Assault plus Sword of Feast and Famine, or tight aristocrat loops, to convert doubled triggers into deterministic kills. Tighten the mana base with fast lands and ramp like Smothering Tithe and signets so you commit your board and protect it the same turn.