Mirror Box (Kamigawa: Neon Dynasty)

The "legend rule" doesn't apply to permanents you control. Each legendary creature you control gets +1/+1. Each nontoken creature you control gets +1/+1 for each other creature you control with the same name as that creature.

NM - $6.00
LP - $4.50
MP - $3.50
HP - $2.50
DMG - $1.50