Jeskai Geist indeed seems much better than either of these decks right now. After all, Delver is doing nothing while various Jeskai Queller builds (including ones with Geist) are firmly Tier 1! But I think adding Delver improves enough matchups on its own (Valakut and Gx Tron, for instance) to merit consideration in some metagames, and as a devotee of the little guy, I was interested in trying to find functional builds in these colors.

For Geist though, even in the worst case scenario, the threat of an attack from Geist usually requires the other player to hold back attackers to leave up blockers. In the best of cases, it’s clocking in for 6 a turn and can’t be removed, while the rest of the deck plays at instant speed, can tap opponent’s team, counter stuff, and bolt-snap-bolt.