Roald, Stewart's Steward

When Roald, Steward's Steward enters the battlefield, each creature target
opponent controls gets -X/-X until end of turn
where X is the number of Skids you control.
Stewart? - When you cast
Stewart, Wondrous Raver, you may put
Roald, Steward's Stewart from the graveyard
to the battlefield.
Partners with Stewart, Wondrous Raver