Archon of Waves: Lorelai

Island Walk, Haste, Double Strike

{u} Siren Song: All creatures who can attack
must attack Lorelai. During this attack Lorelai
gains {x} +1/+1 counters where {x} is the
number of merfolk on the field.

Every upkeep put a +1/+1 counter on all creatures
for every merfolk on the field