graded card backpack PREZA with Slab Case Insert - Holds 85 Graded Slabs - Trading Card Backpack Compatible with MTG, TCG, PSA, BGS, SGC Collectors Dream Design PREZA Graded Card Backpack -

Adding 20 cards to your deck seems like a massive drawback that would hamper the consistency of your deck yet Yorion got the ban hammer in several formats, and some Modern decks still tinker with 80 cards, even without the extra creature in their sideboard

any battle damage your opponent takes becomes halved for the rest of this turn, also Special Summon that monster, and if you do, take 1000 damage

You can banish 2 "Skull Servants" and this card from your Graveyard

I lost 2-0

Kefka Palazzo Purphoros, God of the Forge is usually not a very good Limited card

Better presentation: Blister packs often have more attractive packaging and are therefore more suitable as gifts