I’ve been justifying the old grixis delver deck for a while now, mainly due to the local pptq people loving their burn and zoo decks, so the extra life saved is actually incredibly helpful, as is the flying when it comes to closing. Grixis delver is still a totally fine deck choice, but if i were going to something like a GP, i’d probably switch to shadow due to the faster closing speed. The delver version plays the better K command snapcaster mage value game, but sometimes getting ran over by hollow ones makes that a moot point, so i’d prefer a 6/6 or 8/8 deaths shadow in that environment. I wouldn’t ride the deck off just yet.

Does less overall but fine I guess? In Grixis I’m not sure you can justify Delver over Shadow, and in Jeskai, over control.