Riveteer's Blessing

{2}: Until end of turn, each creature spell
you cast has blitz. The blitz cost is equal to
its mana cost. Activate this ability only as a sorcery and only once per turn. (you may choose to cast that spell for its blitz cost. If you
do, it gains haste and "when this creature dies,
draw a card." sacrifice it at the beginning of the
next end step.)