nintendo card sleeves Ultra Pro Pokemon Energy Darkness Type 65ct Deck Protector you can cancel within 3 days Pokemon Trading Card Game: Moonlight

Oh yeah void cares about anybodys permanents leaving play, not just yours

If this card in its owner's possession is destroyed by an opponent's card: Your opponent pays exactly 500 LP for each counter on this card

For the cost of one card, you can immediately add a pair of scales and summon an in-archetype monster right away for whatever purpose you may need

It seems very unlikely that the consistency you lose from playing 20 extra cards will decrease your odds of winning by 10% or more, which would mean even discounting any specific Yorion, Sky Nomad synergy, it would be correct for a lot of decks to add some extra cards to meet the Bird Serpent's companion restriction