XMage doesn't handle obscure rule 121.8 about drawing cards face down while casting a spell

***121.8** If a spell or ability causes a card to be drawn while another spell is being cast, the drawn card is kept face down until that spell becomes cast (see rule 601.2i). While face down, it’s considered to have no characteristics. The same is true with relation to another ability being activated. If an effect allows or instructs a player to reveal the card as it’s being drawn, it’s revealed after the spell becomes cast or the ability becomes activated.*

Cast this Savra by activating both spheres...

These cards should be face down. Notably, if either were a Spirit Guide, I would not be able to use it to pay for mana costs.