Vivid Spores prevents Drustvar Horror's other spell from targeting heroes

[Jetz72]

I think that's the common thread between these reports?

https://us.forums.blizzard.com/en/hearthstone/t/drustvar-horror-unable-to-target-opponents-face/28703

I had lightning bolt and vivid spores as the spells for my drustvar horror and i was not able to target my demon hunter opponent’s face. on mobile

https://us.forums.blizzard.com/en/hearthstone/t/swampqueens-hagathas-horror/29485

Can’t target the battlecry, with lava burst and vivid spores. i can try it out with the the tavernkeeper to send screenshots the only minion on his board was mana cyclone

https://twitter.com/OdemianHS/status/1247610109527830528

Lava Burst can't go face Celestalon :(

What are the two spells on it?

lava burst and vivid spores

https://www.reddit.com/r/hearthstone/comments/fwoq1o/bug_couldnt_go_face_with_lava_burst_from_drustvar/

Bug? Couldn't go face with Lava Burst from Drustvar Horror battlecry

What was the other spell you chose?

The other spell was vivid spores.

Not sure why Vivid Spores would affect the targeting requirements of the other spell, and target requirements are no longer stored on the client sadly so we can't check, but it seems like a solid correlation. Maybe an earlier design of it required a minion as a target, and that target requirement never got fully removed?