Corrun, Digital Soulsaver

All Creatures able to block this creature do so.
Corrun, Digital Soulsaver gets +1/+0 for each
Online creature you control.
Whenever a blocking creature dies during your
turn, send it Online under your control.
(Online creatures can't interfere with the game except:
their ongoing abilities still resolve and you may count
them as creatures of a type, subtype and colour
stated on them that you control.)