Crescendum

Reveal cards from the top of your library until
you reveal a nonlegendary creature card with
mana value 2 or less, put it onto the battlefield
and put the rest on the bottom of your library in
any order.
If Crescendum would be put in any zone other
than your hand, the stack or Aphelios's spellbook, return it to Aphelios's spellbook instead.
Phase calibrum or severum