Lord Harkon

When Lord Harkon enters the battlefield, create
X 0/1 black Vampire Hound creature tokens with deathtouch, where X is the amound of red mana used to cast Lord Harkon.
{1}{r}: Vampire creatures you control get +1/+0 until end of turn.
When a creature dies, put a blood counter on
Lord Harkon, then if there are 5 or more blood counters you may transform Lord Harkon.