Skybeast Tracker 

Creature — Giant Archer
$0.11 #22996 0.07 3.1 years
Reach
Whenever you cast a spell with mana value 5 or greater, create a Food token. (It's an artifact with "
,
, Sacrifice this token: You gain 3 life.")
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Kalemne, Disciple of Iroas87%
$12.79↑#8486↑0.0710.9 years↑
"Whenever you cast a creature spell with mana value 5 or greater, you get an experience counter."
Kurgadon84%
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"Whenever you cast a creature spell with mana value 6 or greater, put three +1/+1 counters on this creature."
Stormkeld Prowler84%
$0.10↓#262180.053.1 years
"Whenever you cast a spell with mana value 5 or greater, put two +1/+1 counters on this creature."
Lurking Lizards84%
$0.13↑#187970.001.1 years↓
"Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature."
Ascendant Packleader84%
$0.32↑#8160↑0.154.9 years↑
"Whenever you cast a spell with mana value 4 or greater, put a +1/+1 counter on this creature."
Etherium Spinner84%
$0.25↑#14197↑0.21↑5.3 years↑
"Whenever you cast a spell with mana value 4 or greater, create a 1/1 colorless Thopter artifact creature token with flying."
Butterbur, Bree Innkeeper83%
$0.15↑#12616↑0.133.3 years
"At the beginning of your end step, if you don't control a Food, create a Food token."
Graham O'Brien81%
$0.33↑#14231↑0.33↑3.0 years
"Whenever you cast a spell from anywhere other than your hand, create a Food token."
Thunderous Snapper81%
$0.20↑#11936↑0.137.0 years↑
"Whenever you cast a spell with mana value 5 or greater, draw a card."
Tanufel Rimespeaker81%
$0.22↑#11623↑0.050.7 years↓
"Whenever you cast a spell with mana value 4 or greater, draw a card."
Path of Annihilation78%
$0.32↑#4841↑0.29↑2.3 years
"Whenever you cast a creature spell with mana value 7 or greater, you gain 4 life."
Kulrath Mystic78%
$0.06↓#252510.010.7 years↓
"Whenever you cast a spell with mana value 4 or greater, this creature gets +2/+0 and gains vigilance until end of turn."
Up the Beanstalk77%
$2.45↑#1127↑0.37↑3.1 years
"When this enchantment enters and whenever you cast a spell with mana value 5 or greater, draw a card."
Tempest Hart // Scan the Clouds76%
$0.23↑#12381↑0.003.1 years
"Whenever you cast a spell with mana value 5 or greater, put a +1/+1 counter on this creature."
Spider Manifestation74%
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"Whenever you cast a spell with mana value 4 or greater, untap this creature."
+1 more matching line
Kozilek's Unsealing74%
$0.30↑#2839↑0.37↑2.3 years
"Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add
.""
Helga, Skittish Seer72%
$3.50↑#4384↑0.67↑2.2 years
"Whenever you cast a creature spell with mana value 4 or greater, you draw a card, gain 1 life, and put a +1/+1 counter on this card."
Herald of Ilharg72%
$3.26↑#11696↑0.35↑2.7 years
"Whenever you cast a creature spell, put two +1/+1 counters on this creature. If that spell has mana value 5 or greater, this creature deals damage equal to the number of counters on it to each opponent."
Enraged Flamecaster72%
$0.14↑#14469↑0.120.7 years↓
"Whenever you cast a spell with mana value 4 or greater, this creature deals 2 damage to each opponent."
+1 more matching line