Count Ymir, High Priest

Whenever another creature you control dies,
you may pay 2 life. If you do, create a 1/1 blue horror creature token with Monstrosity {u/b}{u/b}
and "When this creature becomes monstrous,
put two +1/+1 counters on it and it gains hexproof and trample."

Horrors you control get +1/+1.