Seijin of the Cleansing Flame

Reach, vigilance, lifelink.
Holy (Whenever you cast an instant or sorcery with mana value 3 or less, you may exile it and attach it to this card. If this card is put into a graveyard, you may cast the attached spells as though they had flash. Exile those spells.)
Whenever you cast a spell with a holy ability, draw a card.