Players with existing collections in Pokmon TCG Online will be able to transfer up to four copies of each card (with some exceptions) with the rest converting into credits that can be spent on other card singles
Bloodthirster The designers in Studio X did a nice job of gating the extra combat step mechanic here
The Pros Investment Potential : With many extremely rare cards featuring classic artwork of beloved Pokmon, 151 checks all the boxes for a set which can value as time goes on
Lastly, "009" gains the ATK of all other "Deskbots" on the field, prevents your opponent from activating effects while it is attacking, and can even sacrifice another "Deskbot" to protect itself from being destroyed
Seems even better now with Seraphs, might be worth looking into
Goblins will attempt to hit critical mass swiftly, and it's possible to end up with literally hundreds of Goblin tokens on the battlefield, thousands if the match goes long enough