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'{X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If...
'{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
({T}: Add {U} or {R}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.
'Menace Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. Sacrifice a Treasure: Exile the top card of your library. You may...
'Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, you may search your library for a Merfolk card, reveal it, then...
'Rivendell enters tapped unless you control a legendary creature.
{T}: Add {U}.
{1}{U}, {T}: Scry 2. Activate only if you control a legendary creature.
'{T}, Sacrifice a Goblin: This creature deals 2 damage to any target.
Istvan attacks each combat if able.
Prevent all damage that would be dealt to Istvan by creatures.
Whenever a creature an opponent controls dies, put two +1/+1 counters on Istvan.
'As an additional cost to cast this spell, sacrifice a green creature.
Search your library for a green creature card, put it onto the battlefield, then shuffle.
'{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.
'Flying At the beginning of combat on your turn, populate. (Create a token that's a copy of a creature token you control.) Whenever a creature token you control enters, put...