Crevasse Entombed Titan

When Crevasse Entombed Titan enters the
battlefield, create two 2/2 black Zombie creature
tokens.
Whenever you attack with all creatures you
control, create two 2/2 black Zombie creature
tokens.
"Any who visited the resting place of a Death Titan
to sacrifice are guarded by the dead ever after. They
must be desperate to put up with the smell."
- Getha the crone, village blasphemer.