Let's test that theory.
In oETG, skeleton has a cost of 0 (surprise.)
So, here's a deck I'm using in oETG:
Hover over cards for details, click for permalink
716 716 716 716 7t9 7t9 7t9 7ta 7ta 7ta 7ta 81q 81q 81q 81q 81q 81q 81q 81q 81q 81q 81q 81q 80a 80a 80a 80i 80i 80i 80i 8pt
What's the differences between these cards?
Fractal is slightly more broken in oETG and costs 1 more. That's all.
Let's have 10 victorious of this and see how many piles it takes to kill the weakest opponent.
(A pile is half a turn. Half the number to get standard elements turns.)
Game #1: 13 piles (6)
Game #2: 24 piles (And I survived with 1 HP due to a dusk mantle and a bad draw.) (12)
Game #3: 11 piles (5)
Game #4: 16 piles (8)
Game #6: 15 piles (7)
Game #8: 17 piles (8)
Game #9: 14 piles (7)
Game #10: 23 piles (11)
Game #11: 17 piles (8)
Game #14: 16 piles (8)
Turns to win: 8. No rounding needed. Always a plus.
Failed attempts:
Game #5: 32 piles (lost. Bone wall + Poison. This deck is fully upgraded.) (16)
Game #7: 13 piles (Lost. Mutation outrushed me.) (6)
Game #12: 17 piles (Lost. Horned frog + bad draw.) (8)
Game #13: 19 piles (Outrushed by a monodeath. A bad draw.) (9)
That's against completely unupped and somewhat silly opponents. Doesn't seem so powerful to me.
Next theory: Eternity + Skeleton.
Hover over cards for details, click for permalink
716 716 716 716 716 716 6rc 6rc 6rc 6rc 7q0 7q0 7q0 7q0 7ri 7ri 7ri 7ri 7qu 7qu 7qu 7qu 7q2 7q2 7q2 7q2 7q8 7q8 7q8 7q8 8ps
Changes between oETG and ETG that affect this deck:
Eternity costs 5 but has an ability cost of 3 and not 2.
SoR only makes abilities costless.
Fate egg's ability costs 2 time, not 1. Fate egg costs 1, too.
10 victorious games:
Now, this one can't really be determined by TTW only, so I'm going to screenshot every game and have you decide power yourself. I don't think it's this OP, as a lot of these games were quite close.
Game #1:
http://prntscr.com/4kpiye (19 piles, 9)
Game #2:
http://prntscr.com/4kpjoy (17 piles, 8)
Game #4:
http://prntscr.com/4kpkts (23 piles, 12)
Game #5:
http://prntscr.com/4kpl9f (18 piles, 9)
Game #6:
http://prntscr.com/4kplr9 (17 piles, 8)
Game #7:
http://prntscr.com/4kpm7a (11 piles, 5)
Game #8:
http://prntscr.com/4kpmp2 (16 piles, 8)
Game #9:
http://prntscr.com/4kpn2f (16 piles, 8)
Game #11:
http://prntscr.com/4kpo2b (18 piles, 9)
Game #12: No screenshot, apologies. (16 piles, 8)
Failed attempts:
Game #3:
http://prntscr.com/4kpkd5 (Lost due to butterfly effect. 26 piles, 13)
Game #10:
http://prntscr.com/4kpni2 (Lost due to bad hand and crimson dragon. 18 piles, 9)
That... Doesn't seem powerful to me. Just saying.
And yes, I did just remove 20 minutes of my life to do that.