Wow that was an awkward title.
Anyways, a picture is worth a thousand words.
Thousand Word Equivalent:
Why be under a Cloak only to let your opponent see each card you play? Is there any mystery? As it is, might as well apply mass quint+PA for 3 turns.
Shadal: "Cloak!! Hah! Now you can't see my field!!"
Lumofuze: "Damn, oh wait, you played a Jade Shield? At least I know not to bolt you now." ^_^
Shadal: "How'd you know I played it.. you can't see it on the field right?"
Lumofuze: "No, but next time don't show me your card and then put it on a "mysterious field."
*plays Quantum Tower, Reflective Shield, bolts herself and wins*