Bring back Warmog stacking but keep Warmog's Heart Unique

have another passive that reads: each successive warmog purchase Restores 1.5% of maximum health regen while in combat.

or some other stat like maybe when below 50% health or more flat hp.

how about something similar to bond of stone. receive 10% damage reduction when below 25% health including true damage! after all hp counters true damage.

so you don't get 1 shot by chogath or garen ult or lee sin q or Veigar's new % hp execute. Finally vayne has a counter.