Issei Hyoudou

Partner with Rias Gremory
Vigilance, First Strike
Issei Hyoudou enters with X +1/+1 counters
on it.
You may sacrifice any number of Devils to help
pay for X.
If a Devil enters the battlefield you may tap
a creature, if a Devil dies you may untap a
creature, activate each only once per turn.
If Issei Hyoudou has two or more +1/+1
counters pay {2}{b}{r} transform.