Kira, Great Glass-Spinner 
Legendary Creature — Spirit
$4.52 #5531 0.74 21.6 years
Flying
Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."
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Shimmering Glasskite94%
$0.13↓#30656↓0.12↓21.6 years
"Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."
+1 more matching line
Jetting Glasskite94%
$0.10↓#30966↓0.20↓21.6 years
"Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."
Glyph Keeper91%
$0.15↓#21239↓0.39↓9.4 years↓
"Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."
Angelic Guardian80%
$3.34↓#12574↓0.17↓7.8 years↓
"Flying"
Glory76%
$0.32↓#12288↓0.59↓24.3 years↑
"Flying"
Disallow75%
$0.41↓#1819↑0.45↓9.6 years↓
"Counter target spell, activated ability, or triggered ability."
Diplomatic Escort74%
$0.14↓#19293↓1.00↑26.9 years↑
", 
, Discard a card: Counter target spell or ability that targets a creature."
, , Discard a card: Counter target spell or ability that targets a creature."
Spectral Adversary74%
$0.44↓#14615↓0.18↓4.9 years↓
"Flying"
Stifle72%
$9.53↑#45880.7723.3 years↑
"Counter target activated or triggered ability."
Voidslime72%
$0.32↓#45110.25↓20.3 years↓
"Counter target spell, activated ability, or triggered ability."
Azorius Guildmage72%
$0.20↓#14622↓0.47↓20.3 years↓
"
: Counter target activated ability."
: Counter target activated ability."
Ice Cave70%
$0.77↓#21126↓0.92↑25.3 years↑
"Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell."
Voidmage Husher70%
$0.24↓#19467↓0.20↓19.9 years↓
"When this creature enters, counter target activated ability."