Elora, Battle's Insight

Prowess, First Strike
Whenever you cast an instant or sorcery spell,
Add {w}, {u}, {b}, or {r}.
Creature cards in your graveyard have Spellsurge {1}. ({1}: Return this card from
your graveyard to your hand. Activate this ability
only if you cast two or more instant or sorcery spells
this turn.)