Decks only contain 20 cards, and you win by getting three points (rather than prize cards, like the standard game)
In essence, playing with an unsleeved deck is the most real Magic experience possible
Partner this card with Sanguine Bond, and you have a nigh-unstoppable chain reaction that will drain your opponents of all their remaining life
I never stuck with it, but did enjoy playing basic decks against some friends a few years ago
They each cost 1 white and 1 generic mana and for 1 white mana, they can prevent all damage dealt to you by a specific source this turn
Kaya's last ability causes you to gain life equal to the number of cards the target player owns in exile, even if an effect causes her to deal more or less than that amount of damage to that player