Unholy Swords 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.

Spun Combat 11 casts

Spell	Casts	Per min
Sinister Strike	4	11.7
Fan of Knives	2	5.8
Tricks of the Trade	1	2.9
Eviscerate	1	2.9
Evasion	1	2.9
Blade Flurry	1	2.9
Slice and Dice	1	2.9