The top three spots all belong to variants of the same Base Set card, which demonstrates just how much the 1st Edition stamp, print run scarcity, and vintage provenance matter in the highest tiers of the hobby
Sands of Time did this neat thing where instead of having an untap step, tapped things untapped and untapped things tapped
Not only is he summoned initially by playing an enchantment with Tatsunari out, but he also drains each of your opponents for one life each time you play an additional enchantment while hes hopping around
Weaknesses: Vulnerable to Pokmon like Gallade ex that punish Energy stacking
The precon already contains every other card from the oath cycle that a Jeskai deck can have, but Oath of Chandra got left out
While Sephara may not be game-ending in its own right, coming down quickly and protecting your board of evasive creatures is nothing to scoff at