Samael, Devourer of Names

Haste, Flying

At the beginning of your end step, Samael, Devourer of Names phases out.

Whenever a creature with one or more keyword abilities dies or is exiled, if it was dealt damage by Samael, Devourer of Names this turn, choose a keyword ability that creature had and put a counter of that kind on Samael, Devourer of Names.