There are just 19 registered with PSA, and these were cards used at press events to show off the e-reader technology available for the Game Boy that would unlock special extras within games
If this Xyz Summoned card is sent to the GY as material for the Link Summon of a "Salamangreat" monster: You can target 1 monster on the field
A good commander will interact with all the pieces of its deck to further its goals, not just Hares
This isnt restricted to just Pirates, either, so if you happen to mill over any enormous threat, The Grim Captains Locker makes it easy to cast it for cheap
So before going into the specific cards, I'd recommend a once per turn on all of the continuous effects
Maybe now, I would wait for lower conditioned raw cards or just keep the graded card for future trades to lower condition (if I am desperate to buy the graded card)