While $600 or $800 certainly isn't cheap for a piece of cardboard, it is a lot cheaper than $1,200 for that same piece of cardboard in slightly better condition
Laughing Jasper Flint Rogues might not be the first outlaw you think of with Laughing Jasper Flint, but they really pump up the triggered ability
Tyvar the Bellicose Tyvar turns your mana dorks into legitimate threats
Creature - Human Soldier Color tag templates(None) Cathar Commando Flash , Sacrifice this creature: Destroy target artifact or enchantment
Rules 08/07/20 If Myr Retriever dies at the same time as another artifact you own, its ability can target that other artifact card
Once you internalize that, the card evaluations below become obvious: ask of every card, is this a source or a payoff, and does the rest of my deck cover the other side? Best lifegain sources (the engines) You want repeatable, incremental gain lots of small triggers beat one big lifegain spell, because payoffs like Vito or Archangel of Thune care about the number of times you gain, not just the total