Katilda and Lier 


Legendary Creature — Human
Whenever you cast a Human spell, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)
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Cards that do something similar expected a card that isn't here?
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Past in Flames 87%
$4.21#1265
"Each instant and sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost."
Lier, Disciple of the Drowned 87%
$0.43#2209
"Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost."
Memory Plunder 86%
$1.30#4606
"You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost."
Harness the Storm 84%
$0.30#16961
"Whenever you cast an instant or sorcery spell from your hand, you may cast target card with the same name as that spell from your graveyard."
Arcane Heist 84%
$3.84#5063
"You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead."
Flashback 83%
$3.87#2830
"Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost."
Taigam, Ojutai Master 83%
$1.00#9267
"Whenever you cast an instant or sorcery spell from your hand, if this card attacked this turn, that spell gains rebound."
Iroh, Grand Lotus 83%
$0.43#6379
"During your turn, each non-Lesson instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost."
Gale, Waterdeep Prodigy 83%
$0.48#5161
"Whenever you cast an instant or sorcery spell from your hand, you may cast up to one target card of the other type from your graveyard. If a spell cast from your graveyard this way would be put into your graveyard, exile it instead."
Sins of the Past 82%
$0.42#22368
"Until end of turn, you may cast target instant or sorcery card from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. Exile this card."
Return the Past 82%
$0.35#9123
"During your turn, each instant and sorcery card in your graveyard has flashback. Its flashback cost is equal to its mana cost."
Niv-Mizzet, Supreme 82%
$0.36#13141
"Each instant and sorcery card in your graveyard that's exactly two colors has jump-start."
Archmage's Newt 82%
$0.18#13172
"Whenever this creature deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback {0} until end of turn instead if this creature is saddled."
Suffocation 80%
$0.15#31137
"Cast this spell only if you were dealt damage this turn by a red instant or sorcery spell."
Baral and Kari Zev 80%
$0.24#6953
"Whenever you cast your first instant or sorcery spell each turn, you may cast a spell with lesser mana value that shares a card type with it from your hand without paying its mana cost. If you don't, create First Mate Ragavan, a legendary 2/1 red Monkey Pirate creature token. It gains haste until end of turn."