yugioh cards synchro Change Synchro Destructor Card Profile :

However, if the exiled creature was copying something else when it was last on the battlefield, Curie copies whatever that creature was copying, plus the additional ability

I prefer typical soft see-through sleeves as theyre the least damage prone, accepted by all grading companies and easiest for everyone to get cards in / out (I often sell cards at the card shop)

As far as strategy goes I would either just use Hypnoblast and combine that with Pokemon who benefit from the defending Pokemon being asleep or be more of an attacker with this card and just use Psychic

As a result, there were 23 Omnath decks out of a possible 32 during the Grand Finals (via Magic Wizards )