M:tG card similarity search
1W · Enchantment
As Call to Arms enters the battlefield, choose a color and an opponent. White creatures get +1/+1 as long as the chosen color is the most common color among nontoken permanents the chosen player controls but isn't tied for most common. When the chosen color isn't the most common color among nontoken permanents the chosen player controls or is tied for most common, sacrifice Call to Arms.
| Name | Mana | Type | Text |
|---|---|---|---|
| A-Hall of Tagsin | Land | {T}: Add {C}. {1}, {T}: Add one mana of any color. {3}, {T}: Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | |
| Hall of Tagsin | Land | {T}: Add {C}. {1}, {T}: Add one mana of any color. {4}, {T}: Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | |
| Crack the Earth | R | Sorcery — Arcane | Each player sacrifices a permanent. |
| Staff of the Letter Magus | 3 | Artifact | As Staff of the Letter Magus enters the battlefield, choose a consonant other than N, R, S, or T. Whenever a player casts a spell, you gain 1 life for each time the chosen letter appears in that spell's name. |
| Barrin's Spite | 2UB | Sorcery | Choose two target creatures controlled by the same player. Their controller chooses and sacrifices one of them. Return the other to its owner's hand. |
| Cultural Exchange | 4UU | Sorcery | Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. (This effect lasts indefinitely.) |
| Joiner Adept | 1G | Creature — Elf Druid | Lands you control have "{T}: Add one mana of any color." 2/1 |
| Agent of Raffine | U | Creature — Human Rogue | {2}, {T}: Choose target opponent. Conjure a duplicate of the top card of their library into your hand. It perpetually gains "You may spend mana as though it were mana of any color to cast this spell." Then they exile the top card of their library face down. 1/2 |
| Urza's Incubator | 3 | Artifact | As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast. |
| Cunning Rhetoric | 2B | Enchantment | Whenever an opponent attacks you and/or one or more planeswalkers you control, exile the top card of that player's library. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast it. |