half pokemon booster box Temporal Forces | Scarlet & Violet and more Pokemon Card TCG Surging Sparks

negate the activation, and if you do, destroy that card, then you can Special Summon 1 Xyz Monster from your GY

Pay Evil unto Evil: Once Samuel Blake is put into play, he's treated just like any other Ally meaning that you can just drop the damage received on him, which is one of the ways to get rid of him (not horror though, as he lacks a Sanity value)

There does not seem to be any indication that any one of these cards is more rare than the other but based on early eBay prices, the Shiny/foil version of Pikachu seems most desirable

The most common way to play it on Master Duel is definitely with the Scrap engine, which helps it access powerful level 8 Synchros like Loading