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(You can only gain the previous effect once per turn.) Once per turn, during the End Phase: You can Set "Sky Striker" Spells with different names from your GY, up to the number of "Sky Striker" Spell Cards you activated this turn while this card was face-up on your field, but banish them when they leave the field

2014-09-20 Any time you have priority, you may turn the face-down creature face up by revealing what its morph cost is and paying that cost

Of course, cards like Command Tower and Sol Ring also fall into this category, but theyre seen to be part of the format (and are also cheap, which helps a lot)

The Raised Foil Avatar Aang seems similarly rare, and could therefore achieve a similar feat