ultra ball pokemon card The item may be similar but not exactly the same as the image (e.g Ultra Ball (Secret) - SWSH09:

Fewer than 40 copies were ever produced, and only one has ever achieved a 10 grade

Main Phase This is where the action happens

If this is on the battlefield, it gets the activated abilities of every artifact in your graveyard

If truly sealed ones could be found, those would surely top this list with ease

For more details on these events, check out the Magic Academy page

Mesmeric Orb and Basalt Monolith - Both cards are good enough on their own, the orb to self-mill, the monolith for some inconsistent ramp, but if you ever find both together you get to essentially dump as much of library in the yard as you want which can be very powerful