No More "I was in Alpha" - Slight Yi Buff

I'm tired of Cowsep and other Yi's being in alpha and dying. Also considering that Master Yi has a 47% winrate at all elos and 43% Winrate at Diamond Elo and higher. I think it's time to give Yi a slight buff.

When Yi is in Alpha Strike instead of making him un-targetable I suggest making in invulnerable while he is in Alpha.

I also feel that master Yi Passive doesn't feel as Impactful as it should be according to its name. Yi passive "Double Strike" should technically auto twice in the time of one auto I feel that they should change his passive to:

After landing 3 basic attacks, Master Yi's next one within 4 seconds strikes twice, dealing 100% AD bonus physical damage which applies on-hit effects and can Critical strike icon critically strike.

Changing the 50% AD to 100%.