Shard of Patience.
With only 8 quanta (5 when both cards are upped) you can do 2X damage, with X being the amount of creatures you have (X Damage with time jump and another X damage, when your creatures attack with the shard of patience buff).
That's 46 damage with two cards, if you have a full field, and even more when you delay some of your opponents creatures, too.
3 SoPS + 3 Time skips with a full field is one turn kill, that is barely UP, but balanced imo, because it's not that easy to get a full field of creatures so fast in a deck, which uses time quanta.