Kytheon's Tactics {1}{W}{W}
Sorcery
Creatures you control get +2/+1 until end of turn.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures also gain vigilance until end of turn. (Attacking doesn't cause them to tap.)
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Cards that do something similar expected a card that isn't here?
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Exquisite Firecraft 85%
$0.31#19101
"If there are two or more instant and/or sorcery cards in your graveyard, this spell can't be countered."
Talent of the Telepath 84%
$0.69#10103
"If there are two or more instant and/or sorcery cards in your graveyard, you may cast up to two instant and/or sorcery spells from among the revealed cards instead of one."
Gideon's Phalanx 84%
$0.20#18245
"If there are two or more instant and/or sorcery cards in your graveyard, creatures you control gain indestructible until end of turn."
Gather the Pack 83%
$0.29#18840
"If there are two or more instant and/or sorcery cards in your graveyard, put up to two creature cards from among the revealed cards into your hand instead of one."
Psychic Rebuttal 83%
$0.15#19733
"If there are two or more instant and/or sorcery cards in your graveyard, you may copy the spell countered this way. You may choose new targets for the copy."
Swift Reckoning 83%
$0.08#26228
"If there are two or more instant and/or sorcery cards in your graveyard, you may cast this spell as though it had flash."
Ravaging Blaze 81%
$0.32#14193
"If there are two or more instant and/or sorcery cards in your graveyard, this card also deals X damage to that creature's controller."