Erif, the Twelfth Flame

Whenever you cast an instant or sorcery spell, put a flame counter on Erif.
{12}{r}{r}{r}, {t}: Search your library for up to
four instant and/or sorcery cards. You may
cast them without paying their mana costs. Then, shuffle your library. This ability costs {1} less to activate for each flame counter on Erif.