Embalming Slime 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.

Spanelus Affliction 5 casts · sequence

Spell	Casts	Per min
Shadow Bite	3	34.1
Shadow Bolt	1	11.3
Spell Lock	1	11.3

Namo Frost 3 casts · sequence

Spell	Casts	Per min
Obliterate	1	11.3
Plague Strike	1	11.3
Icy Touch	1	11.3

Zkurvenyzmrd Combat 1 casts · sequence

Spell	Casts	Per min
Faerie Fire (Feral)	1	11.3