Soulcatchers' Aerie 
Enchantment
$5.14 #6711 0.22 24.3 years
Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on this enchantment.
Bird creatures get +1/+1 for each feather counter on this enchantment.
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Cards similar to Soulcatchers' Aerie expected a card that isn't here?
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Kangee, Aerie Keeper94%
$6.00↑#13794↓0.2925.9 years↑
"Other Bird creatures get +1/+1 for each feather counter on this card."
Soraya the Falconer86%
$2.19↓#19433↓0.3030.9 years↑
"Bird creatures get +1/+1."
Aven Brigadier81%
$2.15↓#17845↓0.00↓23.9 years
"Other Bird creatures get +1/+1."
Comforting Counsel78%
$0.30↓#11149↓0.00↓0.4 years↓
"As long as there are five or more growth counters on this enchantment, creatures you control get +3/+3."
+1 more matching line
Benalish Marshal76%
$0.48↓#78500.44↑8.4 years↓
"Other creatures you control get +1/+1."
Kongming, "Sleeping Dragon"76%
$0.18↓#17673↓0.42↑27.3 years↑
"Other creatures you control get +1/+1."
Serra Aviary75%
$1.12↓#24444↓0.33↑30.9 years↑
"Creatures with flying get +1/+1."
Empyrean Eagle75%
$0.14↓#3070↑0.217.2 years↓
"Other creatures you control with flying get +1/+1."
Thunderclap Wyvern75%
$0.20↓#9631↓0.1711.1 years↓
"Other creatures you control with flying get +1/+1."
Sprite Noble75%
$0.17↓#14344↓0.2919.9 years↓
"Other creatures you control with flying get +0/+1."
Favorable Winds75%
$0.26↓#3213↑0.12↓14.3 years↓
"Creatures you control with flying get +1/+1."
Dictate of Heliod75%
$0.37↓#69130.50↑12.3 years↓
"Creatures you control get +2/+2."
Collective Blessing75%
$0.32↓#8078↓0.1513.9 years↓
"Creatures you control get +3/+3."
Glorious Anthem75%
$0.38↓#71570.2527.9 years↑
"Creatures you control get +1/+1."
Gaea's Anthem75%
$0.25↓#8921↓0.00↓19.6 years↓
"Creatures you control get +1/+1."
Anthem of Champions75%
$0.25↓#63560.141.8 years↓
"Creatures you control get +1/+1."
Air Nomad Legacy74%
$0.26↓#13460↓0.00↓0.8 years↓
"Creatures you control with flying get +1/+1."
Boon of the Spirit Realm74%
$6.72↑#4455↑0.33↑3.1 years↓
"Creatures you control get +1/+1 for each blessing counter on this enchantment."
Call for Unity74%
$0.20↓#8190↓0.00↓9.6 years↓
"Creatures you control get +1/+1 for each unity counter on this enchantment."
Blessed Orator73%
$0.16↓#25404↓0.2524.9 years
"Other creatures you control get +0/+1."