If a card is doing well at tournaments, the price is likely to shoot up as people buy it for their own decks
Sligh's list had four copies of Strip Mine, which, while it doesn't interact with an opponent's life total or creatures, does disrupt them in another wayby destroying their lands
It's pretty absurd to reach 111 life, especially if you have three opponents who know that's your plan, but lifegain decks can do this somewhat consistently if you commit to the bit
This Rabbit has an ability that triggers when he attacks, putting a +1/+1 counter on each Rabbit and token creature you control, which is a great way to boost the power of your little bunnies
The rebranding of booster packs as draft boosters is due to the method of playing Draft
If you're looking for positive benefits of your own, you can get lifegain from Ikra Shidiqi, the Usurper, ramp from Arbor Adherent, and card draw from Abzan Beastmaster