Talk:Kayle/@comment-24053145-20150628032656/@comment-24053145-20150630075014

Both the sated devourer and master yi's passive lose stacks when out of combat, so assume yi always starts combat with neither charged.

Attack one:  1 stack on passive, phantom attack preped

Attack two:  2 stacks on passive, phantom attack, 3 stacks on passive

Attack three:  Attack triggers double strike, second hit from double strike does NOT count as an attack for the purposes of phantom attack, phantom attack preped. 1 stack on passive.

Attack four:  2 stacks on passive, phantom attack, 3 stacks on passive

Attack five + six:  Same as three plus four.

Etc. etc.

The key takeaway is that double hit's second attack doesn't prepare nor trigger phantom hit, phantom hit only counts "normal" attacks. I'd expect shyvanna's twin bite to only count as 1 attack for the purposes of phantom hit, for instance.