Yuro, Underwater Dweller

Yuro can only be blocked by blue creatures.
Landfall- Whenever a land enters the battlefield
under your control, put a +1/+1 counter on Yuro.
Constellation- Whenever an enchantment enters
the battlefield under your control, Yuro deals
damage equal to his power to a creature.
Replicate-Whenever an instant/sorcery enters the battlefield under your control, copy it.