Ythona's Obedient

When Ythona's Obedient enters the battlefield, create {x} blue 2/2 Fighting Fish tokens. If you control a Ythona planeswalker, Ythona's Obedient gets +5/+5 and all other creatures you control get +1/+1 until end of turn unless they are blue, in which case they get +3/+2.
All creatures of the sea are loyal to Ythona, but this little fish has always been special in her heart.