Melira, Obern Sorceress

First strike, vigilance, trample, hexproof, haste, reach, prowess
Creatures you control have first strike, vigilance, and haste.
At the beginning of combat, draw a card. Creatures you control get +X/+X until end of turn, where X is half of the converted mana cost of the card drawn this way rounding down.
Whenever a creature you control deals combat damage to a player, draw a card.