Poisonous Skitterer Kill

Instants are counted from their success event and hard casts from their cast start, because the 3.3.5a client only ever logs one or the other. A hard cast interrupted before it landed still counts — nothing in the log distinguishes it. A few spells, Arcane Missiles among them, this client announces not at all: those are counted from their own ticks instead, one cast per burst of them.

Holywarr Arms 6 casts

Spell	Casts	Per min
Shield Slam	2	37.4
Revenge	1	18.7
Cleave	1	18.7
Thunder Clap	1	18.7
Intercept	1	18.7