The popular pastry searches up whatever low-HP Pokmon you need, which is especially useful in evolution decks that need to get their Basic Pokmon into play as soon as possible to evolve them up into their powerful Stage 2 forms
Doubling Season is the poster child for the way in which Commander drives modern Magic card pricing
Its a fairly fragile card, especially since the best way to enable the survival ability is by attacking, but it has lots of potential as a repeatable entomb effect
But Assassins Creed has given it a bunch of other assassins to use, including some historic payoffs
Level-Up cards must be played onto the corresponding Pokmon like evolution cards (though, in one rule change, it must be the active Pokmon), allowing for a variant of the Pokmon with greater HP, damage and additional attacks - as well as being able to use the moves of the card from which they levelled-up, unlike evolutions