Slime Boss

This enters the battlefield with five +1/+1 counters.

When a non-token permanent you control
with one or more +1/+1 Counter would leave the battlefield, you may pay 3 life, if you do, create two token copies of it with power equal
to half the power of that permanent rounded down and toughness equal to half the toughness of that permanent rounded down, they are not Legendary.