Volatile Arsonist

Menace, haste

Whenever this creature attacks, it deals 1 damage to each of up to one target creature, up to one target player, and/or up to one target planeswalker.

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

Menace, haste

Whenever this creature attacks, it deals 2 damage to each of up to one target creature, up to one target player, and/or up to one target planeswalker.

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