Blackplate Rathalos

Flying, Menace
{r}, Sacrifice a creature: Blackplate Rathalos deals
3 damage to any target. Activate this ability only
if Blackplate Rathalos is attacking.
Whenever Blackplate Rathalos deals combat
damage to a player, exile the top three cards of
their library. You may cast those cards until the
end of your next turn. You may spend mana as
though it were mana of any color to cast these
spells.