So far the Time Travel power is the coolest though also the most complex.

Hiro is seen to have travelled to the future and then a Hiro travelled FROM the future.
Time Travel is a headache for most writers and even worse for gamers.
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Skel: "Ever seen a drunk Lich before?"
Nort: "An drunken undead wizard? How's he get drunk?"
Skel: "It ain't friggin easy, le'me tellya.
Now pass me another beer or spend the rest of your life as a frog!"