I really liked the idea of a faction's mechanic being "discard a creature card, draw a card, do a thing". Trying to figure out what "do a thing" is able to be. Haste seems like an obvious starting point, since it's present in all three colors.

I wonder how to word this in a way that enables it to target something... I explicitly want the "draw a card" effect to resolve, even if the chosen creature dies.

", then choose up to one target creature you control. That creature gains haste until end of turn."