You can throw away all of your lackluster starting Pokemon that you don't need anymore, such as Sableye from Stormfront (#48) or Dunsparce from EX Sandstorm (#60)
ST21-003-sanji is a plus, giving you a +2,000 Counter card that can be used aggressively to prevent opponent from activating a Blocker when one of your Characters goes for the attack
Its unusual effect has led to a particularly high value
Legacy Reanimator, Modern Swarm, and black Affinity decks all like the witch
But between creaturefall abilities and death triggers, some aristocrat action, youre going to drain a lot of your opponents life any time youre taking advantage of mobilize
If any of them require targets, those targets are chosen as you put the abilities on the stack, before any of those abilities resolve