Catacomb Dragon

Flying
Whenever Catacomb Dragon becomes blocked by a non artifact, non-Dragon creature, that creature gets -X/-0 until end of turn, where X is half the creature's power, rounded down.
"My heart is a tomb.Where demons fear to tread. Where angels fear to fly. A catacomb. Where I alone exist to exit or enter.
But always a specter. Yes, a sparse spectator
of the best parts of life."