The cost of giving your opponent a 2/2 flier is way weaker in multiplayer than in 1v1 MTG
Almost invariably both players have empty hands by turn 4 or 5, and against an opponent who has six dead draws in their deck, my chances to win a game from that point become quite high the longer the game drags on
Amy Weber has made some amazing art for artifacts like Life Matrix, Urza's Avenger, or Astrolabe that look almost like diagrams, or like an image you could find in a text about that artifact
In the blue/red spells deck it goes really hard, as it quickly turns any creature, even a measly 1/1, into a must-kill threat
On the positive note when it comes to tournaments in particular you can just focus on the game and because the various event based tournaments are not precisely linked by specific players, you can participate in these events at whatever pace you like
By linking the GBA to another system, be it another GBA or a GameCube, this data can then be uploaded to a game that supports the device