Kalamax, the Stormsire {1}{G}{U}{R}
Legendary Creature — Elemental Dinosaur
Whenever you cast your first instant spell each turn, if Kalamax is tapped, copy that spell. You may choose new targets for the copy.
Whenever you copy an instant spell, put a +1/+1 counter on Kalamax.
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Repeated Reverberation 90%
$0.35#7749
"When you next cast an instant spell, cast a sorcery spell, or activate a loyalty ability this turn, copy that spell or ability twice. You may choose new targets for the copies."
Tomb of Horrors Adventurer 89%
$0.36#5990
"Whenever you cast your second spell each turn, copy it. If you've completed a dungeon, copy that spell twice instead. You may choose new targets for the copies."
Storm of Saruman 88%
$3.01#3593
"Whenever you cast your second spell each turn, copy it, except the copy isn't legendary. You may choose new targets for the copy."
Spider-Verse 87%
$1.16#8465
"Whenever you cast a spell from anywhere other than your hand, you may copy it. If you do, you may choose new targets for the copy. If the copy is a permanent spell, it gains haste. Do this only once each turn."
Spellweaver Volute 85%
$1.14#18319
"Whenever you cast a sorcery spell, copy the enchanted instant card. You may cast the copy without paying its mana cost. If you do, exile the enchanted card and attach this Aura to another instant card in a graveyard."
Spellweaver Helix 85%
$2.16#10908
"Whenever a player casts a card, if it has the same name as one of the cards exiled with this artifact, you may copy the other. If you do, you may cast the copy without paying its mana cost."
Shiko and Narset, Unified 85%
$0.90#8322
"Whenever you cast your second spell each turn, copy that spell if it targets a permanent or player, and you may choose new targets for the copy. If you don't copy a spell this way, draw a card."
Echo Storm 84%
$0.30#11252
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Fury Storm 84%
$4.47#7420
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies."
Hatut Zeraze Strike Force 84%
$0.74#21321
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Genesis Storm 84%
$0.68#13220
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Skull Storm 84%
$0.87#12613
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Empyrial Storm 84%
$0.41#18267
"When you cast this spell, copy it for each time you've cast your commander from the command zone this game."
Sage of the Skies 83%
$0.54#12695
"When you cast this spell, if you've cast another spell this turn, copy this spell."
Show of Confidence 83%
$0.19#10015
"When you cast this spell, copy it for each other instant and sorcery spell you've cast this turn. You may choose new targets for the copies."
Molten Exhale 83%
$0.15#13599
"You may cast this spell as though it had flash if you behold a Dragon as an additional cost to cast it."
Owlin Spiralmancer 83%
$0.27#9441
"Whenever you cast your first spell with {X} in its mana cost each turn, you may copy it. You may choose new targets for the copy."