Lux, the Thunderbeast

Trample, haste, flash

Enrage - Whenever a source would deal
damage to Lux, the Thunderbeast, it deals
two damage to that target. If it's a creature, it can't block on your next turn, if it's a player, that player mills two cards.

{2}{u}{u},{t}: Put a +1/+1 counter on Lux and then
it fights target creature