Patch changes
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(Patch February 6, 2018) Note: Can no longer be cast on non-Heroic targets.
(Patch September 5, 2017) Note: Cooldown reduced from 15 seconds to 12 seconds.
(Patch May 17, 2016) Note: Lt. Morales' Safeguard will now use the new floating combat text style, rather than the old one.