I was playing a Rocket's Scyther, and my opponent was playing a Ditto. He
used Shadow Images. I retreated my Rocket's Scyther and played a Brock's
Onix. The question then arose as to whether his Shadow Images still applied.
I claimed that card stated "This effect lasts until Rocket's Scyther takes
damage", and since he was now a Brock's Onix, it no longer applied. He felt
that his attack was still in effect. Could you give a ruling please?
Thank you, Mark Yudkin
Shadow Images is an attack which remains on the Pokemon as long as it's
active (and does not take damage). It's kinda like an invisible counter
that goes on the Pokemon. While the Ditto remains active, it continues to
have that counter, so yes - Ditto can still utilize the benefit of Shadow
Images, regardless of what Pokemon your opponent has.
Scott