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 8 casts · sequence

Spell	Casts	Per min
Revenge	4	23.7
Cleave	3	17.8
Thunder Clap	1	5.9

Clegane Frost 6 casts · sequence

Spell	Casts	Per min
Frost Strike	2	11.8
Blood Boil	2	11.8
Obliterate	1	5.9
Howling Blast	1	5.9

Firecracker Arcane 6 casts · sequence

Spell	Casts	Per min
Arcane Explosion	5	29.7
Cone of Cold	1	5.9

Priestick Holy 4 casts · sequence

Spell	Casts	Per min
Prayer of Mending	1	5.9
Circle of Healing	1	5.9
Flash Heal	1	5.9
Greater Heal	1	5.9

Cosmiccow Feral Combat 1 casts · sequence

Spell	Casts	Per min
Cat Form	1	5.9