M:tG card similarity search
3UUBB · Creature — Demon Ninja
Ninjutsu {4}{U}{B} ({4}{U}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Silent-Blade Oni deals combat damage to a player, look at that player's hand. You may cast a spell from among those cards without paying its mana cost. 6/5
| Name | Mana | Type | Text |
|---|---|---|---|
| Acidic Dagger | 4 | Artifact | {4}, {T}: Whenever target creature deals combat damage to a non-Wall creature this turn, destroy that non-Wall creature. When the targeted creature leaves the battlefield this turn, sacrifice Acidic Dagger. Activate only before blockers are declared. |
| Radiant Flames | 2R | Sorcery | Converge — Radiant Flames deals X damage to each creature, where X is the number of colors of mana spent to cast this spell. |
| Fire Ants | 2R | Creature — Insect | {T}: Fire Ants deals 1 damage to each other creature without flying. 2/1 |
| Brainstealer Dragon | 5BB | Creature — Dragon Horror | Flying At the beginning of your end step, exile the top card of each opponent's library. You may play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it. Whenever a nonland permanent an opponent owns enters the battlefield under your control, they lose life equal to its mana value. 6/6 |
| Ceremonial Knife | 1 | Artifact — Equipment | Equipped creature gets +1/+0 and has "Whenever this creature deals combat damage, create a Blood token." (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.") Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.) |
| Wand of Denial | 2 | Artifact | {T}: Look at the top card of target player's library. If it's a nonland card, you may pay 2 life. If you do, put it into that player's graveyard. |
| Breath of the Sleepless | 3U | Enchantment | You may cast Spirit spells as though they had flash. Whenever you cast a creature spell during an opponent's turn, tap up to one target creature. |
| Memory Erosion | 1UU | Enchantment | Whenever an opponent casts a spell, that player mills two cards. |
| Undercity Plunder | 1B | Sorcery | Target opponent discards a card. Then they may discard an additional card. If they don't, conjure a duplicate of a random card from their library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell." |
| Deus of Calamity | R/GR/GR/GR/GR/G | Creature — Spirit Avatar | Trample Whenever Deus of Calamity deals 6 or more damage to an opponent, destroy target land that player controls. 6/6 |