I think you'll need some deckbuilding finesse to get the most value out of The Speed Demon
Herd Heirloom A viable mana rock that works for multi-colored creature decks, and it even offers a second ability that generates card advantage or helps kill your opponent (there are so many good creatures with at least 4 power)
Anywho, hope you enjoy the video and let me know how the deck performs for you
Then exile it.) Illustrated by Fang Xinyu Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
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
Then that opponent would be more inclined to make a deal