Infected Aleksander

Trample
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
When Infected Aleksander enters the battlefield, destroy target creature with power less than or equal to the number of poison counters on Opponents.
Whenever a creature you control with infect deals combat damage to a player, put a -1/-1 counter on each creature target opponent controls. If a creature you control with infect kills a creature this way, you may return it