M:tG card similarity search
3UU · Enchantment
Whenever a creature or land becomes tapped, put an hourglass counter on it. Each permanent with an hourglass counter on it doesn't untap during its controller's untap step. At the beginning of each player's upkeep, remove all hourglass counters from permanents that player controls.
| Name | Mana | Type | Text |
|---|---|---|---|
| Gore Vassal | 2W | Creature — Phyrexian Dog | Sacrifice Gore Vassal: Put a -1/-1 counter on target creature. Then if that creature's toughness is 1 or greater, regenerate it. 2/1 |
| Ertai, the Corrupted | 2WUB | Legendary Creature — Phyrexian Human Wizard | {U}, {T}, Sacrifice a creature or enchantment: Counter target spell. 3/4 |
| Glass Asp | 1GG | Creature — Snake | Whenever Glass Asp deals combat damage to a player, that player loses 2 life at the beginning of their next draw step unless they pay {2} before that step. 2/1 |
| Invasion of Moag | 2GW | Battle — Siege | (As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.) When Invasion of Moag enters the battlefield, put a +1/+1 counter on each creature you control. |
| Green Dragon | 4GG | Creature — Dragon | Flying Poison Breath — When Green Dragon enters the battlefield, until end of turn, whenever a creature an opponent controls is dealt damage, destroy it. 4/4 |
| Gyre Sage | 1G | Creature — Elf Druid | Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) {T}: Add {G} for each +1/+1 counter on Gyre Sage. 1/2 |
| Blood Researcher | 1BG | Creature — Vampire Druid | Menace (This creature can't be blocked except by two or more creatures.) Whenever you gain life, put a +1/+1 counter on Blood Researcher. 2/2 |
| Dragonspark Reactor | 1R | Artifact | Whenever Dragonspark Reactor or another artifact enters the battlefield under your control, put a charge counter on Dragonspark Reactor. {4}, Sacrifice Dragonspark Reactor: It deals damage equal to the number of charge counters on it to target player and that much damage to up to one target creature. |
| Tempest Caller | 2UU | Creature — Merfolk Wizard | When Tempest Caller enters the battlefield, tap all creatures target opponent controls. 2/3 |
| Leechridden Swamp | Land — Swamp | ({T}: Add {B}.) Leechridden Swamp enters the battlefield tapped. {B}, {T}: Each opponent loses 1 life. Activate only if you control two or more black permanents. |