No Mercy
Enchantment
Whenever a creature deals damage to you, destroy it.
- CMC
- 4
- Mana cost
- Color identity
- B
- Rarity
- mythic
- Set
- Dominaria Remastered
- Price
- $18.67
- EDHREC rank
- #1540
No Mercy turns your life total into a wall — any creature that deals damage to you is destroyed, which collapses combat math for every opponent at the table. Four mana for a static enchantment that survives wraths and punishes every attack is the correct rate; Xantcha, Sleeper Agent runs it precisely because she forces opponents into combat and No Mercy makes that a death sentence.
Best Commanders
Commanders with the highest synergy
Xantcha, Sleeper Agent
Xantcha, Sleeper Agent donates herself to an opponent and then incentivizes that opponent to attack others — No Mercy means any creature that redirects aggression back at you dies on contact, making the political engine nearly self-sustaining.
Thantis, the Warweaver
Thantis, the Warweaver forces all creatures to attack each upkeep, which floods every combat step with creatures swinging into someone; No Mercy converts that mandatory chaos into a board wipe for anyone foolish enough to send creatures your direction.
Phage the Untouchable
Phage the Untouchable can't block safely and dies to almost any combat interaction, so keeping creatures off her is a structural priority; No Mercy discourages chump attacks and protects Phage from trade-down blocks by punishing every creature that connects.
Jon Irenicus, Shattered One
Jon Irenicus, Shattered One donates creatures to opponents and grows them, which means the table is constantly threatening to swing those gifted creatures back at you; No Mercy makes that threat bilateral and encourages the recipients to point their new toys elsewhere.
Mogis, God of Slaughter
Mogis, God of Slaughter is a pillowfort-adjacent blood tax that wants opponents alive and in pain — No Mercy adds a second layer of deterrence by ensuring any creature that does attack you is immediately destroyed, locking opponents into the sacrifice or take-damage loop.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
No Mercy is a Commander card through and through — the threat of repeated attacks from multiple opponents is exactly the environment where a permanent that destroys every creature that damages you earns its keep. In Legacy and Vintage it's technically legal but sees no play; four mana for a reactive enchantment with no immediate board impact is too slow for those formats, and single-opponent games diminish the political weight that makes No Mercy oppressive. Oathbreaker is the one non-Commander format worth mentioning, where it functions identically to its Commander role but in a faster, smaller game. Outside of those eternal and casual formats, No Mercy is simply not legal, which is fine — it was designed for multiplayer tables.
Key Combos
Combo lines featuring this card
Budget Alternatives
Cheaper options that do most of the same work
Revenge of Ravens is the closest budget replacement — it doesn't destroy attacking creatures, but it taxes each one for 1 life and gains you 1, which accomplishes the same goal of making your life total an unattractive target at a fraction of the cost. Hissing Miasma does similar work by draining the attacking player for each creature swung your way, though neither card carries the hard deterrent of No Mercy's outright destruction; if your meta runs stompy decks with expendable tokens, the replacements soften attacks where No Mercy would end them.
Price Context
Current price
$18.67 mid tier
At $18.67, No Mercy sits in mid-tier pricing — notable but not a barrier to entry for a card that fills a unique role with no direct functional reprint. It has held this price band steadily because demand from Commander players is consistent and supply is limited to a small number of older printings, so the floor is unlikely to drop dramatically.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.