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.

Demonleaf Demonology 21 casts · sequence

Spell	Casts	Per min
Seed of Corruption	6	13.8
Life Tap	3	6.9
Life Tap	3	6.9
Cleave	2	4.6
Anguish	2	4.6
Demonic Siphon	1	2.3
Shadowflame	1	2.3
Intercept	1	2.3
Drain Soul	1	2.3
Arcane Torrent	1	2.3

Slime Protection 17 casts · sequence

Spell	Casts	Per min
Cleave	6	13.8
Revenge	3	6.9
Thunder Clap	3	6.9
Devastate	2	4.6
Shield Slam	1	2.3
Shockwave	1	2.3
Challenging Shout	1	2.3

Cosmiccow Feral (DPS) 12 casts · sequence

Spell	Casts	Per min
Swipe (Cat)	8	18.4
Tiger's Fury	1	2.3
Commanding Shout	1	2.3
Faerie Fire (Feral)	1	2.3
Dire Bear Form	1	2.3

Firecrackers Holy 12 casts · sequence

Spell	Casts	Per min
Prayer of Healing	3	6.9
Flash Heal	3	6.9
Circle of Healing	2	4.6
Holy Nova	2	4.6
Prayer of Mending	1	2.3
Greater Heal	1	2.3

Skoomi Enhancement 9 casts · sequence

Spell	Casts	Per min
Fire Nova	3	6.9
Magma Totem	3	6.9
Summon Fizzabella Coincache	1	2.3
Chain Lightning	1	2.3
Stormstrike	1	2.3