Rageblade is the first really successful Hybrid Item
Hybrid items have always been underrated and I'm happy to finally see a hybrid item that seem to be working. Yes it is strong but it is conditional.
Here are the conditions
1-only stacks with basics attacks and no longer abilities. 2-geared towards melee champs as they get 2 stacks per basic attack 3- 5 second window to keep stacks. Used to be 8 seconds 4-picking a hybrid item means you missout on a pure ad or ap item. Meaning you lose potential an ad crit/armor pen item. 5-limited to auto attack champs with both ad and ap scaling. 6-Lower ad/ap vs pure items. meaning you could get a 75 ad or 100 ap item instead.
So yes, it is strong, but very limited to who can fully utilize it.