The mechanic
Shen's ultimate teleports him to any ally anywhere on the map and shields them, so a fight across the map can turn into a two versus one.
Why it needs saying
An unannounced Shen ultimate is a wasted one: the ally disengages before it lands. No champion in the game converts communication into damage this directly.
When you play them
When an ally plays them
- team chat
what you type
shen ult wait for him
in full english
Shen has his ultimate, wait for him before you fight.
the context
The mirror call. Knowing an ally can arrive changes the value of a fight entirely.