Olivia, Mobilized for War 


Legendary Creature — Vampire Knight
$0.63 #10988 0.05 10.5 years
Flying
Whenever another creature you control enters, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.
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Cards similar to Olivia, Mobilized for War expected a card that isn't here?
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"Whenever a creature you control enters, it gets +2/+0 and gains haste until end of turn."
Ogre Battledriver79%
$0.32↓#3321↑0.20↑13.8 years↑
"Whenever another creature you control enters, that creature gets +2/+0 and gains haste until end of turn."
Good-Fortune Unicorn78%
$0.28↓#3546↑0.157.4 years↓
"Whenever another creature you control enters, put a +1/+1 counter on that creature."
Wartime Protestors78%
$0.22↓#91620.130.9 years↓
"Whenever another Ally you control enters, put a +1/+1 counter on that creature and it gains haste until end of turn."
Master Biomancer76%
$0.84↑#3231↑0.28↑13.7 years↑
"Each other creature you control enters with a number of additional +1/+1 counters on it equal to this creature's power and as a Mutant in addition to its other types."
First Day of Class76%
$0.21↓#98780.33↑5.5 years↓
"Whenever a creature you control enters this turn, put a +1/+1 counter on it and it gains haste until end of turn."
Juniper Order Ranger76%
$0.15↓#8248↑0.18↑21.2 years↑
"Whenever another creature you control enters, put a +1/+1 counter on that creature and a +1/+1 counter on this creature."
Surrak and Goreclaw73%
$5.05↑#1572↑0.36↑3.5 years↓
"Whenever another nontoken creature you control enters, put a +1/+1 counter on it. It gains haste until end of turn."