How to bring Rek'sai back into play without making her OP
Currently Rek'sai is not played at all and when she is her win rate is abysmal.
Change her Passive to: While Burrowed, Rek'sai heals for (1% + 1% per 100 tAD) of her max HP consuming 25% of her max Rage per second for up to 4 seconds.
Add to her W un-burrow: Knockup prioritizes champions. This would add back her skill expression to the knockup.
Add to her E Burrowed: Rek'asi is untargetable while inside a tunnel. This would allow her to dive and make her a bit more slippery. Also add skill expression to her play.