Having that extra bit of speed for every single deck type in the game can be surprisingly powerful, as it can essentially put the player one turn ahead of their opponent in terms of resources
Gift allows you to give an opponent a draw, a creature, or even an extra turn in exchange for powering up the spell
Prosper, Tome-Bound requires considerably more setup to use optimally, but if your deck is already playing a lot of cards that let you play cards from exile, the value it generates from its Treasure tokens can be absolutely silly
It can protect valuable cards from black discard, and can combine with library shuffling effects to improve your draw (such as Thawing Glaciers, Flooded Strand, or Ramosian Sergeant)
Unlike today, when each player can have a copy of a legend on the battlefield, in 2000, only one copy of a legend could exist on the battlefield, period, between both players
Heirloom Blade When it comes to creature type-based equipment, look no further than Heirloom Blade