Mohg, Lord of Blood

First Strike, Haste

Whenever a creature dies, you may create a number of blood tokens equal to its toughness.

When Mohg attacks, he gets +X/+0 until the end of turn equal to the number of blood tokens you control. If X is
10 or more he gains Flying, and Deathtouch until the end of turn.

"Welcome, honored guest, to the birthplace of our dynasty!"