Peggy Carter, Secret Agent 
Legendary Creature — Human Spy Hero
$0.24 #19151 0.09 0.3 years
Whenever a creature you control attacks alone, it gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
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Cards similar to Peggy Carter, Secret Agent expected a card that isn't here?
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Angelic Guardian92%
$3.56↑#12560↑0.41↑7.9 years↑
"Whenever one or more creatures you control attack, they gain indestructible until end of turn."
Luke Cage, Power Man90%
$0.15↓#214870.23↑0.3 years
"Whenever this card attacks alone, he gets +2/+0 and gains indestructible until end of turn."
Iconic Shield86%
$0.21↓#24166↓0.20↑0.3 years
"Equipped creature gets +1/+2 and has "Whenever this creature attacks, another target attacking creature gains indestructible until end of turn.""
Hardened Escort84%
$0.16↓#163380.002.1 years↑
"Whenever this creature attacks, another target creature you control gets +1/+0 and gains indestructible until end of turn."
Foot Elite84%
$0.12↓#175680.090.6 years
"Whenever this creature attacks, another target creature you control gets +1/+0 and gains indestructible until end of turn."
Stonehoof Chieftain83%
$2.36↑#4903↑0.67↑9.9 years↑
"Whenever another creature you control attacks, it gains trample and indestructible until end of turn."
Nick Fury, Spymaster83%
$0.34↑#213190.24↑0.3 years
"Whenever a creature you control attacks alone, draw a card. Then you may put a creature card with mana value 3 or less from your hand onto the battlefield. It enters tapped and attacking and gains indestructible until end of turn."
Captain America, Skybound81%
$0.70↑#165560.160.3 years
"Whenever this card and at least two other creatures attack, put a +1/+1 counter on each attacking creature. They gain indestructible until end of turn."
Tegan Jovanka81%
$0.29↑#12482↑0.29↑3.0 years↑
"Whenever you attack, target attacking historic creature gets +1/+1 and gains indestructible until end of turn."
Estwald Shieldbasher80%
$0.15↓#25774↓0.004.9 years↑
"Whenever this creature attacks, you may pay . If you do, it gains indestructible until end of turn."
. If you do, it gains indestructible until end of turn."
Frontline Medic80%
$0.21↓#3575↑0.34↑13.7 years↑
"Whenever this creature and at least two other creatures attack, creatures you control gain indestructible until end of turn."
Captain America, Steve Rogers78%
$1.84↑#200440.43↑0.3 years
"Whenever this card attacks, put a +1/+1 counter on another target creature you control. That creature gains indestructible until end of turn."
Fey Steed76%
$0.35↑#175140.155.2 years↑
"Whenever this creature attacks, another target attacking creature you control gains indestructible until end of turn."
Consul's Shieldguard76%
$0.05↓#26259↓0.0610.1 years↑
"Whenever this creature attacks, you may pay 
. If you do, another target attacking creature gains indestructible until end of turn."
. If you do, another target attacking creature gains indestructible until end of turn."
Black Panther, Claws of Bast76%
$1.44↑#212630.31↑0.3 years
"Whenever a creature you control attacks alone, put a +1/+1 counter on it."
Anara, Wolvid Familiar76%
$0.74↑#4060↑0.22↑5.9 years↑
"During your turn, commanders you control have indestructible."
Deathless Angel76%
$1.49↑#184260.19↑16.5 years↑
": Target creature gains indestructible until end of turn."
: Target creature gains indestructible until end of turn."
Primaris Chaplain76%
$0.29↑#156480.47↑4.0 years↑
"Whenever this creature attacks, it gains indestructible until end of turn."
Stalwart Pathlighter74%
$0.33↑#12048↑0.055.1 years↑
"At the beginning of combat on your turn, if you control three or more creatures with different powers, creatures you control gain indestructible until end of turn."
Taranika, Akroan Veteran74%
$0.25↑#155780.146.7 years↑
"Whenever this card attacks, untap another target creature you control. Until end of turn, that creature has base power and toughness 4/4 and gains indestructible."