Arasta of the Endless Web
Arasta da Teia Infinita
Arasta de la Tela Infinita
Legendary Enchantment Creature — Spider
Reach Whenever an opponent casts an instant or sorcery spell, create a 1/2 green Spider creature token with reach.
An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.