SkulkSkulk is an evasion ability.
A creature with skulk can’t be blocked by creatures with greater power. (See rule 509, “Declare Blockers Step.”)
Multiple instances of skulk on the same creature are redundant. (CR 702.118) (This creature can't be blocked by creatures with greater power.)
Parallel Universe — Whenever this creature deals combat damage to a player,
time travelTo time travel means to choose any number of permanents you control with one or more time counters on them and/or suspended cards you own in exile with one or more time counters on them and, for each of those objects, put a time counter on it or remove a time counter from it. See rule 702.62, “Suspend.” (CR 701.56). (For each suspended card you own and each permanent you control with a time
counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1) on it, you may add or remove a time
counterTo counter a spell or ability is to cancel it: remove it from the stack without resolving it. A counter on an object or player is instead a marker that changes characteristics or interacts with rules or abilities; for example, a +1/+1 counter modifies a creature’s power and toughness. (CR 701.6; 122.1).)