Oracle

Enchantment 

Whenever you cast a noncreature spell, you may have Riddleform become a 3/3 Sphinx creature with flying in addition to its other types until end of turn.
2U: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Tournooi-info

Legal in: Vintage, Legacy, Modern, Standard, Commander

Officiele rulings

6/23/2020
Riddleform’s first ability resolves before the spell that caused it to trigger but after targets for that spell are chosen. It will resolve even if that spell is countered.

6/23/2020
If Riddleform becomes a creature the same turn it enters the battlefield, you can’t attack with it unless it gains haste.

Decktips