giovanni's persian pokemon card Giovanni s 4 Evolves from null Colorless Giovanni's Persian Destined Rivals |

This is in a similar space to Teferi, Hero of Dominaria, but I think its a little worse overall

Strixhaven Stadium is no good here

It is kept from being higher up on the list due to its lack of utility in the late game, and the fact that early ramp in Oldschool most often produces a large turn 2 creature, or is used for an early game counterspell

Chaos: Whenever you roll Chaos, reveal the top card of your planar deck

If you do activate it, you can make an attacking creature unblockable, including Taeko himself

Silver Tempest is also the last standard SWSH booster box Crown Zenith never had booster boxes which adds collector demand beyond just the cards