M:tG card similarity search
UB · Legendary Creature — Human Spy
As long as X is in X's owner's opponent's hand, X's owner may cast X and activate X's abilities. That opponent can't cast X and plays with their hand revealed. {U}{B}, {T}: Put X into target opponent's hand. {3}{U}{B}: You may play a land or cast a spell from the hand X is in. If you cast a spell this way, you cast it without paying its mana cost. 2/2
| Name | Mana | Type | Text |
|---|---|---|---|
| River's Grasp | 3U/B | Sorcery | If {U} was spent to cast this spell, return up to one target creature to its owner's hand. If {B} was spent to cast this spell, target player reveals their hand, you choose a nonland card from it, then that player discards that card. (Do both if {U}{B} was spent.) |
| Cho-Arrim Legate | 2W | Creature — Human Soldier | If an opponent controls a Swamp and you control a Plains, you may cast this spell without paying its mana cost. Protection from black 1/2 |
| The Great Synthesis | Enchantment — Saga | (As this Saga enters and after your draw step, add a lore counter.) I — Draw cards equal to the number of cards in your hand. You have no maximum hand size for as long as you control The Great Synthesis. II — Return all non-Phyrexian creatures to their owners' hands. III — You may cast any number of spells from your hand without paying their mana costs. Exile The Great Synthesis, then return it to the battlefield (front face up). | |
| Saprazzan Legate | 3U | Creature — Merfolk Soldier | If an opponent controls a Mountain and you control an Island, you may cast this spell without paying its mana cost. Flying 1/3 |
| Moonhold | 2R/W | Instant | Target player can't play lands this turn if {R} was spent to cast this spell and can't cast creature spells this turn if {W} was spent to cast this spell. (Do both if {R}{W} was spent.) |
| Command the Chaff | 4UU | Instant | Look at target opponent's sideboard. You may cast a card from that sideboard without paying its mana cost. Exile Command the Chaff. |
| Quick Sliver | 1G | Creature — Sliver | Flash Any player may cast Sliver spells as though they had flash. 1/1 |
| Surtland Elementalist | 5UU | Creature — Giant Wizard | As an additional cost to cast this spell, reveal a Giant card from your hand or pay {2}. Whenever Surtland Elementalist attacks, you may cast an instant or sorcery spell from your hand without paying its mana cost. 8/8 |
| Mirrored Depths | Plane — Karsus | Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell. Whenever chaos ensues, target player reveals the top card of their library. If it's a nonland card, you may cast it without paying its mana cost. | |
| Damping Sphere | 2 | Artifact | If a land is tapped for two or more mana, it produces {C} instead of any other type and amount. Each spell a player casts costs {1} more to cast for each other spell that player has cast this turn. |