shoutmon blitz might not be with us anymore but his spirit remains
I'll test out the deck once BT21 releases and is playable on DCGO, but for now this feels like it could work. I've chosen Pickmons (BT10-003) for now for a simple draw, but since I imagine the deck will heavily benefit from Shoutmon (BT19-008)'s on play effect, Pickmons (BT19-001) are also in consideration in case sliding down a higher volume of OmniShoutmons is neccesary. Our lord and savior OmniShoutmon (BT21-021) will be able to attack out of turn thanks to Taiki Kudo (BT21-083) and then pull out another OmniShoutmon for free thanks to Shoutmon (BT19-008). Shoutmon DX (BT21-027) is likely to end up a heavy hitter since you have a chance to give him a bunch of security checks thanks to OmniShoutmon (BT11-015) and Greymon (ST1-07), which you can slide below Shoutmon DX or anyone else at any time for a cost of 2 thanks to Rowdy Rocker (BT5-094). I don't need to explain Omnimon (BT5-086). Proportions (particularly OmniShoutmon proportions) are subject to change.
of course this is all my imagination it will probably suck when it releases but sure whatever