Geomancer is a good champion, and he can be useful in many situations. But not Spider boss:  he's targeting spiderling with his A3. Which makes him ... Not so useful anymore.

• Title:  Geomancer IA uses spells funnily. 
• On computer
• Windows 10  
• Steps you performed in the game before the issue occurred/ description of the issue:

Random first point: 1) When setting spell order on a preregistered team, and ONLY setting A1 as an opener, he uses it twice, before starting to use the other ones. (does not happen if another spell is set as first priority > he will then use the first priority spell right after the opening A1)

2) He uses his A3, his BEST spell, on the "first" spiderling (the duo in front of the boss, the one on the right of the player view, if alive). At most 1/3 goes on boss. And if used once on the boss, the next one will be used on spiderling.

3) Without using team setting, or without setting any spell order, his A3 still goes on spiderling, and A1 is used twice (after using a team setting with A1 as an opener ? sry, not enough time this evening to do even more runs)

4) At best when setting A3 as first priority (and not setting any opener), he will start the fight using it on spider boss, but the next one will be on spiderling (with debuff still up on boss). It can be "not so bad", as more than one target will be under his burn debuff, and then take reflect dmg too... But it's so much better to reset the burn debuff timer on the boss. Even more with Weaken and steal turn meter. It feels awfully wasted on spiderling.

4 bis)  It does work too when only setting A1 as an opener, but same thing: the second time his A3 is up, he will use it on a spiderling.

I used Versulf, Venomage (always), Martyr (always as aura champ), Fayne, Coldheart, Fu-Shan (just one test for aura), and Scyl, in different combinations, and got the issue each time. Didn't see any change when using different champions.

It's a choice to make spiderling a possible target for his A3, but it makes Geomancer not so useful anymore with Auto fight on Spider boss. It would be like seeing Coldheart using Heartseeker on a spiderling (and I don't remember ever seeing it happen ?).

The logic could be that if he uses his A2 on the burning spiderling (and kill it), he can then get back his A3 quicker, and re-use it on the boss before the end of the initial debuff ... But at my "bad" lvl (17 at most), spiderlings are killed before his next turns. So it feels like a waste ...

Maybe it isn't a bug, and just a default setting, but then it could be a point that needs a rework?