Before it was released, Skullclamp initially gave +1/+1 to the equipped creature
As long as you have some ways to gain life, which is trivial in many token decks, it doesnt lose relevance in the late game because it becomes a super cheap token doubler
With friends bringing their own boosters, this means enough Murders at Karlov Manor Play Boosters to participate in three different drafts, or one game of Sealed Deck and one of Draft
They change to a second form with special effects when certain conditions are met
You'll put a time counter on it at the beginning of your upkeep, and once you have at least one you'll be able to Time Travel (or proliferate) them to either of your hearts' content!
This is solid stuff, but we can do even better on a budget