Katai, Titan of Ancient Flame

When Katai enters the battlefield, sacrifice it
unless it escaped.
Whenever Katai enters the battlefield or attacks,
add {u}{r} to your mana pool, then you may
discard a card. If you do, the next instant or
sorcery spell you cast this turn gains storm.
Escape—{u}{u}{r}{r}, Exile five other cards from
your graveyard.