Naxxramas Acolyte 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.

Saggissand Arms 14 casts

Spell	Casts	Per min
Cleave	2	5.8
Thunder Clap	2	5.8
Mortal Strike	2	5.8
Charge	2	5.8
Intercept	1	2.9
Berserker Rage	1	2.9
Sweeping Strikes	1	2.9
Berserker Stance	1	2.9
Battle Stance	1	2.9
Whirlwind	1	2.9