You'll lose the ability to quest immediately with him, but the trade-off is being able to play an eight-Willpower Bodyguard (that heals itself) on turn four instead of turn five
From there, simply look in your favorite card database for cards with at the beginning of your upkeep and fill out the deck with your favorite effects
Much like Up the Beanstalk of Modern and current Standard fame, Yshtola only cares about the printed cost of a card, not how much you actually pay for it
Not nothing
Whether youre sacrificing him to get the effect or he gets too large and exiled with a Swords to Plowshares, the effect will still trigger, making it quite a bit better than a dies trigger on its own
Denry Klin, Editor in Chief Counter decks are often concerned with getting the counters on their creatures, which makes Denry Klin, Editor in Chief a handy tool for distribution