M:tG card similarity search
3R · Enchantment
At the beginning of each upkeep, count the number of permanents. If the number is odd, until end of turn, red creatures get +1/+1 and whenever a player taps a Mountain for mana, that player adds an additional {R}. If the number is even, until end of turn, red creatures get -1/-1 and if a player taps a Mountain for mana, that Mountain produces colorless mana instead of any other type.
| Name | Mana | Type | Text |
|---|---|---|---|
| Master of Waves | 3U | Creature — Merfolk Wizard | Protection from red Elemental creatures you control get +1/+1. When Master of Waves enters the battlefield, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) 2/1 |
| Retrieval Agent | 3U | Creature — Human Soldier | {2}: Retrieval Agent gets +1/-1 until end of turn. 2/5 |
| Leaf-Crowned Elder | 2GG | Creature — Treefolk Shaman | Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Leaf-Crowned Elder, you may reveal it. If you do, you may play that card without paying its mana cost. 3/5 |
| Earthlore | G | Enchantment — Aura | Enchant land you control Tap enchanted land: Target blocking creature gets +1/+2 until end of turn. Activate only if enchanted land is untapped. |
| Butch DeLoria, Tunnel Snake | 1B | Legendary Creature — Human Rogue | Menace (This creature can't be blocked except by two or more creatures.) Tunnel Snakes Rule! — Whenever Butch DeLoria, Tunnel Snake attacks, it gets +1/+1 until end of turn for each other Rogue and/or Snake you control. {1}{B}: Put a menace counter on another target creature. It becomes a Rogue in addition to its other types. 2/2 |
| Violent Outburst | 1RG | Instant | Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Creatures you control get +1/+0 until end of turn. |
| Volley Veteran | 3R | Creature — Goblin Warrior | When Volley Veteran enters the battlefield, it deals damage to target creature an opponent controls equal to the number of Goblins you control. 4/2 |
| Akki Raider | 1R | Creature — Goblin Warrior | Whenever a land is put into a graveyard from the battlefield, Akki Raider gets +1/+0 until end of turn. 2/1 |
| Kiddie Coaster | Artifact — Attraction | Visit — Creatures you control get +1/+0 until end of turn. | |
| Roller Coaster | Artifact — Attraction | Visit — Creatures you control get +2/+0 until end of turn. |