First time I've ever had either of prism soul carta and 3-star evo materials, if I remember correctly.
by 3* evo mat, are you referring to the 3* Child valkyre (2nd meme, top row, middle spot)?
No, the bottom row, on the left. Dark crystals. Such material is hardly in short supply, but the synthesis tables offer only the one-star mats most of the time.
I once had 50 blood gems as the main draw!
3rd table has Thanatos (5-star water attacker) in the child slot. The generosity.