Alina, Fairy Matriarch

Eminence - If Alina, Fairy Matriarch, is in your command zone or the battlefield, Fairy creatures you control have Flash and "When
this creature enters the battlefield from your hand, counter target spell unless its controller pays 2 life."
Alliance (The first time you would play a card with
a color identity that does not match this Commander,
you may reveal a face down second commander if
both cards have Alliance.)