Boxes actually hold about 1,140 Magic cards, as MTG cards are thinner than baseball cards and those boxes were named after the number of standard baseball cards they hold
March 1, 2023 is the cut-off date, though supported cards and codes ahead of that date can be redeemed in the game until it is officially shut down
Hundred Dragon Type Effect Monster Attribute WIND Typing Dragon Level/Rank 4 ATK 1800 DEF 1000 Typings Effect TCG Date 2020-09-10 OCG Date 2020-01-01 Card Text Once per turn: You can have this card gain Levels equal to the number of cards you control, and if you do, it gains 100 ATK for each Level gained
I can still remember my first encounter with Moltres on Pokemon Red back on my Yellow DMG, but I certainly never get hold of one in a Pokemon Topps packet
Red and black both have creatures that can be sacrificed for mana acceleration, such as Skirk Prospector, but you'll want to limit those creatures in favor of more reliable mana sources and larger creatures that Kaalia can take advantage of