M:tG card similarity search
2UU · Creature — Oyster
You may choose not to untap Giant Oyster during your untap step. {T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't untap during its controller's untap step, and at the beginning of each of your draw steps, put a -1/-1 counter on that creature. When Giant Oyster leaves the battlefield or becomes untapped, remove all -1/-1 counters from the creature. 0/3
| Name | Mana | Type | Text | 
|---|---|---|---|
| Peppersmoke | B | Tribal Instant — Faerie | Target creature gets -1/-1 until end of turn. If you control a Faerie, draw a card. | 
| Foxfire | 2G | Instant | Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn. Draw a card at the beginning of the next turn's upkeep. | 
| Chishiro, the Shattered Blade | 2RG | Legendary Creature — Snake Samurai | Whenever an Aura or Equipment enters the battlefield under your control, create a 2/2 red Spirit creature token with menace. At the beginning of your end step, put a +1/+1 counter on each modified creature you control. (Equipment, Auras you control, and counters are modifications.) 4/4 | 
| Witch's Vengeance | 1BB | Sorcery | Creatures of the creature type of your choice get -3/-3 until end of turn. | 
| Lightning Serpent | XR | Creature — Elemental Serpent | Trample, haste Lightning Serpent enters the battlefield with X +1/+0 counters on it. At the beginning of the end step, sacrifice Lightning Serpent. 2/1 | 
| Festering March | 3BB | Sorcery | Creatures your opponents control get -1/-1 until end of turn. Exile Festering March with three time counters on it. Suspend 3—{2}{B} (Rather than cast this card from your hand, you may pay {2}{B} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) | 
| Molten Firebird | 4R | Creature — Phoenix | Flying When Molten Firebird dies, return it to the battlefield under its owner's control at the beginning of the next end step and you skip your next draw step. {4}{R}: Exile Molten Firebird. 2/2 | 
| Akroan Conscriptor | 4R | Creature — Human Shaman | Heroic — Whenever you cast a spell that targets Akroan Conscriptor, gain control of another target creature until end of turn. Untap that creature. It gains haste until end of turn. 3/2 | 
| The Flesh Is Weak | 2WUB | Enchantment | When The Flesh Is Weak enters the battlefield, put a +1/+1 counter on each creature you control. Creatures you control with +1/+1 counters on them are artifacts in addition to their other types. Nonartifact creatures get -1/-1. | 
| Phyrexian Vatmother | 2BB | Creature — Phyrexian Horror | Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) At the beginning of your upkeep, you get a poison counter. 4/5 |