M:tG card similarity search
4 · Artifact
You may choose not to untap Helm of Possession during your untap step. {2}, {T}, Sacrifice a creature: Gain control of target creature for as long as you control Helm of Possession and Helm of Possession remains tapped.
| Name | Mana | Type | Text |
|---|---|---|---|
| Brimstone Trebuchet | 2R | Artifact Creature — Wall | Defender, reach {T}: Brimstone Trebuchet deals 1 damage to each opponent. Whenever a Knight enters the battlefield under your control, untap Brimstone Trebuchet. 1/3 |
| Dominating Vampire | 1RR | Creature — Vampire | When Dominating Vampire enters the battlefield, gain control of target creature with mana value less than or equal to the number of Vampires you control until end of turn. Untap that creature. It gains haste until end of turn. 3/3 |
| Copperhoof Vorrac | 3GG | Creature — Boar Beast | Copperhoof Vorrac gets +1/+1 for each untapped permanent your opponents control. 2/2 |
| Companion of the Trials | 2W | Creature — Bird Soldier | Flying {1}{W}: Untap target creature. Activate only if you control a Gideon planeswalker. 2/2 |
| Cocoon | G | Enchantment — Aura | Enchant creature you control When Cocoon enters the battlefield, tap enchanted creature and put three pupa counters on Cocoon. Enchanted creature doesn't untap during your untap step if Cocoon has a pupa counter on it. At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can't, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying. |
| Mass Mutiny | 3RR | Sorcery | For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of turn. |
| Shackles of Treachery | 2R | Sorcery | Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals damage, destroy target Equipment attached to it." |
| Horizon Boughs | Plane — Pyrulea | All permanents untap during each player's untap step. Whenever chaos ensues, you may search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle. | |
| Claim the Firstborn | R | Sorcery | Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn. |
| Hazoret's Undying Fury | 4RR | Sorcery | Shuffle your library, then exile the top four cards. You may cast any number of spells with mana value 5 or less from among them without paying their mana costs. Lands you control don't untap during your next untap step. |