Molten Zac as seen in the image would be zac made from lava/molten rocks his effects when attacking would be that instead of goo lava comes out.
as for abilities and effects it's as follows
"Passive" Would have have small rocks covered in lava .
"Q" would be the same but t it would have a lava effect.
"W" would show Zac exploding and lava coming out and leaving a scorch mark .
"E" would have when Zac lands he makes a eruption like a volcano .
"R" would have the same effects as his E but repeated .
"jokes and taunts and recall and taunts"
His recall could be that he raises his first and makes a volcano come out of the ground and erupt him back to his base
If you have any other ideas feel free to add them
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