Masters Edition II

Ebon Praetor

First strike, trample
At the beginning of your upkeep, put a -2/-2 counter on Ebon Praetor.
Sacrifice a creature: Remove a -2/-2 counter from Ebon Praetor. If the sacrificed creature was a Thrull, put a +1/+0 counter on Ebon Praetor. Play this ability only during your upkeep and only once each turn.

First strike, trample
At the beginning of your upkeep, put a -2/-2 counter on Ebon Praetor.
Sacrifice a creature: Remove a -2/-2 counter from Ebon Praetor. If the sacrificed creature was a Thrull, put a +1/+0 counter on Ebon Praetor. Activate only during your upkeep and only once each turn.

Fallen Empires

Trample, first strike
During your upkeep, put a -2/-2 counter on Ebon Praetor.
You may sacrifice a creature during your upkeep to remove a -2/-2 counter from Ebon Praetor. If the creature sacrificed was a Thrull, also put a +1/+0 counter on Ebon Praetor. Only one creature may be sacrificed in this manner each turn.