Chel, Friend to Pups

: Dog and Improviser creatures you control enter the battlefield with vigilance.
-1: Create a 0/1 Dog token named Taco with "Sacrifice this creature to put a +1/+1 counter on another Dog creature, a Michael, or a Chel."
+3: Create a 3/3 Dog token with vigilance named Lucy with "Sacrifice this creature to give a Michael or Chel indestructible until end of turn."