Ill-Tempered Loner

Whenever this creature is dealt damage, it deals that much damage to any target.

: This creature gets +2/+0 until end of turn.

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

Whenever a permanent you control is dealt damage, this creature deals that much damage to any target.

: This creature gets +2/+0 until end of turn.

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