Fighters that are hard to kill
Sterak's Gage
+500 health +25% base attack damage Unique: Upon taking at least 400 to 1800 damage (based on level) within 5 seconds, you gain Primal Rage for 8 seconds. 45 second cooldown. Unique – Primal Rage: Gains increased size, +25% base attack damage and a shield equal to 30% of your maximum Health that rapidly decays over the duration.
Won't fighting Riven/Tryndamere be so much fun now? The classic champions that win duels every time at low HP now have an item that basically says "When I'm about to die, I'm going to slap your face off in 1 auto attack and laugh"