Horizon Seed 
Creature — Spirit
$0.22 #26806 0.00 21.9 years
Whenever you cast a Spirit or Arcane spell, regenerate target creature.
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Cards similar to Horizon Seed expected a card that isn't here?
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Fiddlehead Kami92%
$0.13↓#300360.0021.3 years
"Whenever you cast a Spirit or Arcane spell, regenerate this creature."
Briarknit Kami90%
$0.12↓#229130.25↑21.3 years
"Whenever you cast a Spirit or Arcane spell, put a +1/+1 counter on target creature."
Kami of Fire's Roar88%
$0.09↓#270200.11↑21.9 years
"Whenever you cast a Spirit or Arcane spell, target creature can't block this turn."
Guardian of Solitude87%
$0.20↓#272330.42↑21.9 years
"Whenever you cast a Spirit or Arcane spell, target creature gains flying until end of turn."
Kami of the Waning Moon86%
$0.12↓#225940.25↑21.9 years
"Whenever you cast a Spirit or Arcane spell, target creature gains fear until end of turn."
Kami of the Hunt86%
$0.09↓#280300.25↑21.9 years
"Whenever you cast a Spirit or Arcane spell, this creature gets +1/+1 until end of turn."
Scaled Hulk86%
$0.19↓#304450.27↑21.6 years
"Whenever you cast a Spirit or Arcane spell, this creature gets +2/+2 until end of turn."
Jade Idol85%
$0.17↓#304410.29↑21.9 years
"Whenever you cast a Spirit or Arcane spell, this artifact becomes a 4/4 Spirit artifact creature until end of turn."
Soul of Magma84%
$0.10↓#283080.33↑21.9 years
"Whenever you cast a Spirit or Arcane spell, this creature deals 1 damage to target creature."
Soilshaper84%
$0.16↓#288100.0721.9 years
"Whenever you cast a Spirit or Arcane spell, target land becomes a 3/3 creature until end of turn. It's still a land."
Skyfire Kirin84%
$0.48↑#223900.81↑21.3 years
"Whenever you cast a Spirit or Arcane spell, you may gain control of target creature with that spell's mana value until end of turn."
Haru-Onna82%
$0.25↑#19680↑0.0021.3 years
"Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand."
Sire of the Storm82%
$0.09↓#16438↑0.42↑21.9 years
"Whenever you cast a Spirit or Arcane spell, you may draw a card."
Budoka Pupil // Ichiga, Who Topples Oaks82%
$0.10↓#285420.25↑21.6 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature."
Nikko-Onna82%
$0.23↑#14788↑0.20↑21.3 years
"Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand."
Yuki-Onna82%
$0.31↑#220610.0021.3 years
"Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand."
Innocence Kami82%
$0.19↓#293770.0721.9 years
"Whenever you cast a Spirit or Arcane spell, untap this creature."
Bounteous Kirin81%
$0.40↑#19498↑0.25↑21.3 years
"Whenever you cast a Spirit or Arcane spell, you may gain life equal to that spell's mana value."
Oyobi, Who Split the Heavens81%
$0.29↑#12602↑0.15↑21.6 years
"Whenever you cast a Spirit or Arcane spell, create a 3/3 white Spirit creature token with flying."
Blademane Baku80%
$0.18↓#277610.31↑21.6 years
"Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature."