M:tG card similarity search
2BR · Enchantment
At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value.
| Name | Mana | Type | Text |
|---|---|---|---|
| Cloudkill | 4BB | Sorcery | All creatures get -X/-X until end of turn, where X is the greatest mana value of a commander you own on the battlefield or in the command zone. |
| Reflecting Mirror | 4 | Artifact | {X}, {T}: Change the target of target spell with a single target if that target is you. The new target must be a player. X is twice the mana value of that spell. |
| Shining Shoal | XWW | Instant — Arcane | You may exile a white card with mana value X from your hand rather than pay this spell's mana cost. The next X damage that a source of your choice would deal to you and/or creatures you control this turn is dealt to any target instead. |
| Alliance of Arms | W | Sorcery | Join forces — Starting with you, each player may pay any amount of mana. Each player creates X 1/1 white Soldier creature tokens, where X is the total amount of mana paid this way. |
| Hesitation | 1U | Enchantment | When a player casts a spell, sacrifice Hesitation and counter that spell. |
| Lunar Force | 2U | Enchantment | When an opponent casts a spell, sacrifice Lunar Force and counter that spell. |
| Smokestack | 4 | Artifact | At the beginning of your upkeep, you may put a soot counter on Smokestack. At the beginning of each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack. |
| Planar Nexus | Land | Planar Nexus is every nonbasic land type. (Nonbasic land types include Cave, Desert, Gate, Lair, Locus, Mine, Power-Plant, Sphere, Tower, and Urza's.) {T}: Add {C}. {1}, {T}: Add one mana of any color. | |
| Hypersonic Dragon | 3UR | Creature — Dragon | Flying, haste You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.) 4/4 |
| Cactus Preserve | Land — Desert | Cactus Preserve enters the battlefield tapped. {T}: Add one mana of any type that a land you control could produce. {3}: Until end of turn, Cactus Preserve becomes an X/X green Plant creature with reach, where X is the greatest mana value among your commanders. It's still a land. |