Lambholt Raconteur

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Whenever you cast a noncreature spell, this creature deals 2 damage to each opponent.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)