The Guildwalker

In order to cast this card, you must pay at least 2
mana of different colors. The Guildwalker's color
identity is any combination of 2 types of
mana spent to cast it.
Whenever a creature you control deals damage
to a player, put a +1/+1 counter and a counter of
your choice of flying, haste, vigilance, double
strike, first strike, lifelink,
deathtouch, indestructible, or hexproof on target creature you control.