Purity wrote:
Not true IMO, Spyglass stacks each time you deal spell damage while IotDS is on spell cast. It takes less time to build the Spyglass, and as long as you have even 1 DoT tick in a 10s timeframe you maintain the stack. Even in an encounter mechanic like Putricide's Tear Gas your DoTs continue to refresh your stack while stunned.
You can cast any spell (shield, levitate, innerfire fade, whatever) and it refreshes
You can also pre-stack IDS while you can only gain stacks of Spyglass during combat (my guess is the reason why it is higher)
You can only lose IDS stacks if you are stunned/silenced for the duration.
While, it is unrealistic that both would fall off in a fight (barring a 20sec lore stun ie illidan)
Spyglass will get back up faster in case of it falling off.