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.

Slime Arms 6 casts · sequence

Spell	Casts	Per min
Revenge	2	13.3
Cleave	2	13.3
Thunder Clap	2	13.3

Firecracker Arcane 5 casts · sequence

Spell	Casts	Per min
Arcane Explosion	3	19.9
Dragon's Breath	1	6.6
Flamestrike	1	6.6

Clegane Frost 3 casts · sequence

Spell	Casts	Per min
Blood Boil	2	13.3
Howling Blast	1	6.6

Cosmiccow Feral (DPS) 2 casts · sequence

Spell	Casts	Per min
Swipe (Cat)	2	13.3

Priestick Discipline 2 casts · sequence

Spell	Casts	Per min
Flash Heal	2	13.3