Arceus, Ultimate Judge

Flying, first strike, hexproof from abilities
Renown 5 (Whenever this creature deals combat damage to a player, if it isn't renowned, put 5 +1/+1 counter on it and it becomes renowned.)
Retribution (Whenever a creature you control dies, put a +1/+1 counter on this creature.)
Arceus must attack each turn if able. If Arceus is blocked put a -1/-1 counter on it.