Titan's Call

As an additional cost to cast this spell, sacrifice
a creature or a land. Search your library for a
creature card with power or toughness equal to
the sacrificed card's power or toughness an put
it onto the battlefield. Then shuffle your library.
Taunt a target opponent.
In the roots of the world tree, the strength of the
ancient titans lies dormant. Those brave enough
to tap into it may awaken unimaginable power.