Watcher of the Spheres {W}{U}
Creature — Bird Wizard
Flying
Creature spells with flying you cast cost {1} less to cast.
Whenever another creature you control with flying enters, this creature gets +1/+1 until end of turn.
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Cards that do something similar expected a card that isn't here?
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Warden of Evos Isle 100%
$0.23#3758
"Creature spells with flying you cast cost {1} less to cast."
+1 more matching line
Waterkin Shaman 88%
$0.10#30406
"Whenever a creature you control with flying enters, this creature gets +1/+1 until end of turn."
Winged Words 85%
$0.19#3484
"This spell costs {1} less to cast if you control a creature with flying."
Momo, Friendly Flier 83%
$0.50#7864
"Whenever another creature you control with flying enters, this card gets +1/+1 until end of turn."
+1 more matching line
Gust of Wind 83%
$0.16#14147
"This spell costs {2} less to cast if you control a creature with flying."
Swampsnare Trap 82%
$0.10#17529
"This spell costs {1} less to cast if it targets a creature with flying."