Valiant Emberkin is a rare Enchantment Creature — Mouse Glimmer card from Alchemy: Duskmourn (YDSK), collector number 28.
Haste Whenever this creature enters or attacks, target creature you control perpetually gets +1/+0. If a creature you control becoming the target of a spell or ability causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.