Whispers from Beyond

Manipulation {c} ({c}: Put a control counter on
Whispers from Beyond. You may remove X control counters from Whispers from Beyond. If you do,
you gain control of target creature with toughness X or
less. Activate this ability only as a sorcery.)
Exile Whispers from Beyond, sacrifice X
creatures you control but don't own: Cast up to
X Demon, Horror, Eldrazi, Nephilim, and/or Phyrexian creature cards you own from outside
the game without paying their mana cost.