Simple quick fix ideas for low win-rate champions

Tahm Kench (45%) - thick skin heals from taking minion or monster damage. (jungle/top improvement, he's more popular roaming anyways. And a utility jungler is needed to be as cool as ivern lol)

Trundle (45% also) - Ult stacking similar to Cho'gath, to fit in with the juggernauts Gnar (46) - more rage gained from taking damage, full rage at 50% health Gragas (43%) - drunken rage stacking, again to fit in with juggernauts

These three have an awful late game, which is why they need these changes. Especially when people get the jump on Gnar and stun lock him, or ADC meta destroys him.

Kalista (46%) - ultimate makes her untargettable (she's practically a ghost anyways)

Malphite (45%) - rework idea for his passive. Multiple sided shields. When all shields are up he does more damage. Ult does more damage, but sheds all rock shields at end of ultimate.

Lucian (45%) - Culling is channeled until he runs out of mana. (new blue build champ?) Applys on-hit if same target takes more than x amount of hits. (land multiple ult hits will proc frozen guantlet for a slow. that would be neat)