Spellrune Howler

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Legality

Format Legality
1v1 Commander Legal
Alchemy Legal
Archenemy Legal
Arena Legal
Block Constructed Legal
Canadian Highlander Legal
Casual Legal
Commander / EDH Legal
Commander: Rule 0 Legal
Custom Legal
Duel Commander Legal
Gladiator Legal
Highlander Legal
Historic Legal
Historic Brawl Legal
Legacy Legal
Leviathan Legal
Limited Legal
Modern Legal
Modern Beyond Horizons Legal
Oathbreaker Legal
Pioneer Legal
Planar Constructed Legal
Planechase Legal
Pre-release Legal
Quest Magic Legal
Standard Legal
Standard Brawl Legal
Tiny Leaders Legal
Vanguard Legal
Vintage Legal

Spellrune Howler

Creature — Werewolf

Whenever you cast an instant or sorcery spell, this gets +2/+2 until end of turn.

Nightbound (If a player casts two spells during their own turn, this game becomes day next turn during the untap step. When it becomes day, all permanents on the battlefield transform into their daybound side if they have one, and any new permanents that enter the battlefield will enter on their daybound side if they have one. Becoming day/night does not use the stack and cannot be responded to.)