Queen Emily, The Radiant

Whenever you attack, you may pay {r}{2}, if you do make 2 2/2 tapped and attacking red human knight creature tokens.

Whenever you block, you may pay {w}{2}, if you do create 2 2/2 blocking white human knight creatures tokens

Whenever you take damage you may pay {b}{2}, if
you do creature 2 2/2 black human knight creature tokens with deathtouch