M:tG card similarity search
3 · Legendary Artifact
Karn's Sylex enters the battlefield tapped. Players can't pay life to cast spells or to activate abilities that aren't mana abilities. {X}, {T}, Exile Karn's Sylex: Destroy each nonland permanent with mana value X or less. Activate only as a sorcery.
| Name | Mana | Type | Text | 
|---|---|---|---|
| Suppression Bonds | 3W | Enchantment — Aura | Enchant nonland permanent Enchanted permanent can't attack or block, and its activated abilities can't be activated. | 
| Unbound Flourishing | 2G | Enchantment | Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy. | 
| Stupefying Touch | 1U | Enchantment — Aura | Enchant creature When Stupefying Touch enters the battlefield, draw a card. Enchanted creature's activated abilities can't be activated. | 
| Ellie and Alan, Paleontologists | 2GWU | Legendary Creature — Human Scientist | {T}, Exile a creature card from your graveyard: Discover X, where X is the mana value of the exiled card. Activate only as a sorcery. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.) 2/5 | 
| Tazri, Stalwart Survivor | 2W | Legendary Creature — Human Warrior | Each creature you control has "{T}: Add one mana of any of this creature's colors. Spend this mana only to activate an ability of a creature. Activate only if this creature has another activated ability." {W}{U}{B}{R}{G}, {T}: Mill five cards. Put all creature cards with activated abilities that aren't mana abilities from among the milled cards into your hand. 3/3 | 
| Heartstone | 3 | Artifact | Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana. | 
| Runic Armasaur | 1GG | Creature — Dinosaur | Whenever an opponent activates an ability of a creature or land that isn't a mana ability, you may draw a card. 2/5 | 
| Convergence of Dominion | 3 | Artifact | Dynastic Command Node — As long as you control your commander, activated abilities of cards in your graveyard cost {2} less to activate. This effect can't reduce the mana in that ability's activation cost to less than one mana. Translocation Protocols — {3}, {T}: Mill three cards. | 
| Gobsmacked | 1W | Enchantment — Aura | Enchant nonland permanent As Gobsmacked enters the battlefield, choose a person outside the game. As long as you can see the chosen person from your seat, enchanted permanent can't attack or block, and its activated abilities can't be activated. | 
| Training Grounds | U | Enchantment | Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana. |