Heart of Inxaeyis

You cant cast this card from your hand.
When Heart of Inxaeyis enters the battlefield,
target creature or planeswalker you control
becomes a spirit in addition to its other types,
and gains indestructible.
{t}: Sacrifice Heart of Inxaeyis; you gain X life,
and draw X cards, where X is the number of
mana spent as {x}. When Heart of Inxaeyis gets
put into graveyard or exile, you may transform
it into Inxaeyis the Timeless. Put that card into
your hand