Deckbuilding implication: you need mana consistency , defensive interaction , and finishers that end games instead of generate value. Good questions: Can I reliably cast my top end
You can only Special Summon "Caligo Claw Crow" once per turn this way
However, they can still be raised and used like any other Pokmon, and there are tricks that let you retain both of them permanently: transferring Kenya's mail to another Pokmon and handing that one over instead (the remakes will even give your Pokmon back if you try this) and reaching a high enough friendship with Shuckie
You cannot Special Summon from the Extra Deck, except Fusion Monsters, the turn you activate either of this card's effects
We can pump our commander all we want, but if we can't hit someone for damage, what do we do
Attach 2 lightning energy from your discard pile to that Pokmon