As the match progresses, though, this becomes a weaker option but can be used to give your other Grass-type strategies a bit more sting
Moreover, sleeves are essential in preventing bending and creasing, which are common issues that can drastically decrease a cards value
When it comes to Grixis, this means black paired with its two allied colors, red and blue
In fact, there's a good argument that UW Delver was one of the most powerful Standard decks during the Mythic Era, especially if you discount decks like Caw Blade that were good enough to be the target of bannings
Even a small handful of Van Gogh Museum staffers got the sack for misconduct and reportedly stealing a box of Pikachu with Grey Felt Hat cards
Speaking of which, Slifer should also have its own Continuous Spell that grants its controller an infinite hand size and forces them to draw each time a monster is Special Summoned from a Graveyard