Corridor Monitor | Legion Loyalty | Strionic Resonator

(and one other card)

Declare
Corridor Monitor as an attacker, triggering its myriad ability.
Holding priority, activate
Thran Dynamo by tapping it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) .
Activate
Strionic Resonator by paying ({2} magic symbol) and tapping it, copying
Corridor Monitor's myriad trigger.
Resolve the copy of
Corridor Monitor's myriad trigger, creating a token copy of
Corridor Monitor that is tapped and attacking each other opponent.
The
Corridor Monitor tokens enter the battlefield, untapping
Thran Dynamo and
Strionic Resonator.
Repeat from step 2.