Lifegain prevention is, much like lifegain itself, exactly the sort of narrow yet highly valuable mode you want on your modal cards
Defeating one opponent and gaining an unreasonably high amount of life is usually a way to end games outright
Originally conceived as a best of 1994 release, the set gave players access to expensive singles from Arabian Nights, Antiquities, Legends, and The Dark with a heavy skew towards player-favorite Legends
Did any of them strike your fancy, and how do you plan to use some of the interesting new cards we got
If damage would be dealt to another creature you control, prevent that damage
So, at the beginning of your upkeep, you reveal the top card of your deck, and if it matches a Creature type you have in play, you get to cast it for free