Elvar, Cowardly Illusionnist

Ward {x} where X is the number of illusions you control.
Whenever you cast an instant or sorcery spell,
create a 0/1 illusion wall creature token with
defender and "When this creature is the target
of a spell of ability, sacrifice it."
When an illusion you control blocks or become blocked by a creature, tap that creature and put
a stun counter on it.