Nikosu of the Third Wave

Haste, Trample, Last Strike (Treat creatures that
block or become become blocked by this creature as
if they had first strike)
When Nikosu of the Third Wave attacks, exile
the top 4 cards of your library, put any creature
exiled this way with converted mana cost X or
less onto the battlefield tapped and attacking.
Where X is Nikosu's of the Third Wave power.
"Join the Wave"