M:tG card similarity search
1G · Instant
Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control. Untap it.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Sea Spirit | 4U | Creature — Elemental Spirit | {U}: Sea Spirit gets +1/+0 until end of turn. 2/3 | 
| Angelic Exaltation | 3W | Enchantment | Whenever a creature you control attacks alone, it gets +X/+X until end of turn, where X is the number of creatures you control. | 
| Behemoth of Vault 0 | 6 | Artifact Creature — Robot | Trample When Behemoth of Vault 0 enters the battlefield, you get {E}{E}{E}{E} (four energy counters). When Behemoth of Vault 0 dies, you may pay an amount of {E} equal to target nonland permanent's mana value. When you do, destroy that permanent. 6/6 | 
| Great Oak Guardian | 5G | Creature — Treefolk | Flash (You may cast this spell any time you could cast an instant.) Reach When Great Oak Guardian enters the battlefield, creatures target player controls get +2/+2 until end of turn. Untap them. 4/5 | 
| Chainflail Centipede | 2B | Artifact Creature — Equipment Insect | Whenever Chainflail Centipede or equipped creature attacks, it gets +2/+0 until end of turn. Reconfigure {2} ({2}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.) 2/2 | 
| Lightning Dragon | 2RR | Creature — Dragon | Flying Echo {2}{R}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) {R}: Lightning Dragon gets +1/+0 until end of turn. 4/4 | 
| Heightened Reflexes | R | Instant | Target creature gets +1/+0 until end of turn. Put a first strike counter on it. | 
| Ghoul's Feast | 1B | Instant | Target creature gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard. | 
| Vile Deacon | 2BB | Creature — Human Cleric | Whenever Vile Deacon attacks, it gets +X/+X until end of turn, where X is the number of Clerics on the battlefield. 2/2 | 
| Ascendant Packleader | G | Creature — Wolf | Ascendant Packleader enters the battlefield with a +1/+1 counter on it if you control a permanent with mana value 4 or greater. Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on Ascendant Packleader. 2/1 |