Melaar, the Street Skulk

Haste, Menace, Vigilance.
Whenever another creature that shares at least 1 creature type with Melaar, the Street Skulk enters the battlefield, scry {x}, where {x} is that creatures
power.
{b}{b}, discard any number of cards: Each card discarded in this way deals 1 damage to any target.
{r}{r}, sacrifice a creature: Melaar deals damage
equall to it’s toufness to any target.