Ok, so Quasiduplicate seems pretty good to me for a mid-lategame Clone effect. I run a particular deck with a lot of copy or steal effects, so having good creatures isn't hard to achieve.
Anyone else running this one?
Second, decks with powerful 5 drops. I like treating it as a Titan in the sense that I want to cast + flash it back on turn 6 for a monstrous effect. This means fielding things like Thragtusk, Mulldrifter and Peregrine Drake that heavily reward you for copying them.