Zaxiv, Chief of Interrogation

Defender, flash
Whenever Zaxinav, consul of defence attacks, it
gains +X+0 where X is the number of creatures
the defending player controls which are detained.
Each creature your opponents control blocked by
a creature with defender you control is detained
until your next end step.
Zaxinav, Consul of Defence can attack players who
control detained creatures as though it didn't have
defender.