65 x 100 card sleeves Ultra Pro - Board Game 100 card sleeves Sleeves are suitable for cards of size Board Game Sleeves – Vault

There's no way of knowing if you'll find the most valuable Magic: The Gathering card until you start looking around, especially considering that at the end of the day

60 Card Types : Including Commons (C), Uncommons (U), Rares (R), Double Rares (RR), Art Rares (AR), Super Art Rares (SAR), Ultra Rares (UR), and the coveted Ace Spec cards

While some of its floodgates require immense setup, others are significantly easier to play, and one of the most efficient cards in this regard is Cactus Bouncer

And yes, banding finally made it back to Magic (and in the same set with snow-covered landwalk no less)

Here are the obligatory non budget and other cards to consider

You can only activate 1 "Silver's Cry" per turn