Haven't been playing for a while , i feel like an alien.

So i've been busy with school and haven't really been playing or paying attention to the LoL news , i play a game as Rengar jgl , my Q is acting weird , i only have 4 stacks , ppl can see me when im close while im in ult , red buff spawns first and no more baby buffs , krugs split a thousand times , 5 raptors , there was something that gave me free health and something that knocked me away , talon jumping over walls , there was a fake leblanc in my lane ( different game now ) , and so much more , my team spent 5 mins explaining everything , this is what happens when you get busy in pre-season