With a couple of notable exceptions, most cards in this ranking will generate one of those two types
Because of the Altisaurs enrage ability, each time it takes damage, it fights again and again until you clear the board
If a specific ramp card is particularly synergistic with your decks main strategy, strongly consider playing that card
While its scope is limited to fetching artifacts, this unique feature seamlessly facilitates setups for reanimation effects, such as Trash for Treasure or Daretti, Scrap Savant
If it ends up selling for that much, it would become the most expensive Magic card ever sold
If you need a quick way to gain a ton of hand advantage, warping a Starwinder is far from the worst thing you could do - even if you're missing out on the 7/7 beater it provides when you warp it for a single turn