The Dawning Archaic {10}
Legendary Creature — Avatar
This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Reach
Whenever The Dawning Archaic attacks, 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.
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Jeleva, Nephalia's Scourge 95%
$1.90#14126
"Whenever this card attacks, you may cast an instant or sorcery spell from among cards exiled with this card without paying its mana cost."
Helmut Zemo, Mastermind 85%
$0.24#21031
"Whenever this card attacks, you may cast target instant or sorcery card with mana value less than or equal to his power from your graveyard. If that spell would be put into your graveyard, exile it instead. If you cast a spell this way, put a +1/+1 counter on this card."
Wrexial, the Risen Deep 84%
$1.87#5216
"Whenever this card deals combat damage to a player, you may cast target instant or sorcery card from that player's graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead."
Howl of the Horde 84%
$0.24#13504
"If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy."
+1 more matching line
Sphinx of Forgotten Lore 83%
$0.42#9023
"Whenever this creature attacks, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to that card's mana cost."
Ardent Dustspeaker 83%
$0.08#20906
"Whenever this creature attacks, you may put an instant or sorcery card from your graveyard on the bottom of your library. If you do, exile the top two cards of your library. You may play those cards this turn."
Kylox's Voltstrider 82%
$0.21#22218
"Whenever this Vehicle attacks, you may cast an instant or sorcery spell from among cards exiled with it. If that spell would be put into a graveyard, put it on the bottom of its owner's library instead."
Dreadhorde Arcanist 81%
$0.63#7861
"Whenever this creature attacks, you may cast target instant or sorcery card with mana value less than or equal to this creature's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead."
The Fugitive Doctor 80%
$0.21#14465
"Whenever this card attacks, you may sacrifice a Clue. When you do, target instant or sorcery card in your graveyard gains flashback {2}{R}{G} until end of turn."
Maelstrom Muse 80%
$0.15#21417
"Whenever this creature attacks, the next instant or sorcery spell you cast this turn costs {X} less to cast, where X is this creature's power as this ability resolves."
Spellbinding Soprano 80%
$0.23#18759
"Whenever this creature attacks, instant and sorcery spells you cast this turn cost {1} less to cast."
Draconic Intervention 80%
$0.28#14995
"As an additional cost to cast this spell, exile an instant or sorcery card from your graveyard."
The Magic Mirror 100%
$3.66#4945
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Furygale Flocking 100%
$0.22#11473
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Eddymurk Crab 100%
$1.51#13043
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Cryptic Serpent 100%
$1.02#17170
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Bedlam Reveler 100%
$0.22#13672
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Tolarian Terror 100%
$0.21#10625
"This spell costs {1} less to cast for each instant and sorcery card in your graveyard."
Mage Duel 90%
$0.10#21489
"This spell costs {2} less to cast if you've cast another instant or sorcery spell this turn."