Krathaar, Undead Knight

Flashstrike
Whenever you cast Krathaar, Undead Knight or another creature with flashstrike, target creature
can't block this turn and damage can't be
prevented.
When Krathaar, Undead Knight attacks, if you control another card named Gremfaar, Undead Paladin, each of those creatures deals damage
equal to its power to any target.