Raidraptor - Ultimate Falcon

Flying, vigilance
As an additional cost to cast this spell, sacrifice any number of creatures with converted mana cost 10 or greater. Raidraptor - Ultimate Falcon enters the battlefield with material counters equal to the number of creatures sacrificed.
Unaffected by other cards' effects.
Remove a material counter: Place a -1/-0 counter on all of your opponents' creatures, also your opponents cannot cast spells or activate effects until the end of the turn.
End step: May place -1/-0 counters on all of