Kemuri-OnnaHow it works & interactions with other cards

What It Does

Kemuri-Onna features two distinct triggered abilities. The first is an 'enters-the-battlefield' ability that forces a target player to discard a card. The second is a triggered ability that looks for you casting either a Spirit or an Arcane spell, allowing you to pay a 'cost' of returning Kemuri-Onna to your hand to save it from removal or to reuse its discard trigger later.

How It Resolves Step by Step

When Kemuri-Onna enters the battlefield, its first ability goes on the stack and you must choose a target player. When that ability resolves, the player chooses and discards a card. Later, if Kemuri-Onna is on the battlefield and you cast a Spirit or Arcane spell, its second ability triggers and goes on top of that spell. You decide whether to return it to your hand as the ability resolves, before the spell you cast actually takes effect.

Common Mistakes

Players often forget that the return-to-hand ability is optional; you are never forced to bounce Kemuri-Onna if you prefer to keep a 3/3 body on the board. Additionally, the discard ability triggers every time it enters the battlefield, meaning if you have a way to flicker it or cast it multiple times in a turn, you can force multiple discards.

When to Play It

This card is most effective in a dedicated Spirit or Arcane deck where you can reliably trigger its self-bounce ability. It serves as a slow but inevitable engine for card advantage, especially in limited formats or themed Commander decks where emptying an opponent's hand is a primary goal.

Interaction examples

Doubling the Smoke

Roaming Throne

If you have Roaming Throne on the battlefield with 'Spirit' chosen as the creature type, Kemuri-Onna will trigger twice when it enters. The target player will have to discard two cards instead of one. Additionally, casting another Spirit will trigger Kemuri-Onna's return ability twice, though the second one will do nothing if you choose to return it with the first.

Efficiency Comparison

Solemn Simulacrum

While both cards cost four or five mana and provide value upon entering, Kemuri-Onna requires a specific deck synergy (Spirits/Arcane) to gain repeat value. Unlike Solemn Simulacrum, which provides its second benefit only upon death, Kemuri-Onna rewards you for proactively casting more spells by letting you dodge removal or 'reset' your discard engine.