MARCUS GREY-MON...

Not an expert at Digimon but found some consistency in the Greymon/Dragon archetype when thinking about the Yellow + Red colors.

Some reasoning behind my deck building:

I follow the ratios 14,12, 8/10, 4 in relationship to Level 3s, 4s, 6s + Options respectively. Because BurningGreymon is on the board a 4 but plays much like a 3 that you'd play from your hand he fills in gaps in my 4s + 3s at the same time so I have 1 less 3 than I'd need to be exact on this ratio. 4s matter a bit less in this deck

Not an expert at Digimon but found some consistency in the Greymon/Dragon archetype when thinking about the Yellow + Red colors.

Some reasoning behind my deck building:

I follow the ratios 14,12, 8/10, 4 in relationship to Level 3s, 4s, 6s + Options respectively. Because BurningGreymon is on the board a 4 but plays much like a 3 that you'd play from your hand he fills in gaps in my 4s + 3s at the same time so I have 1 less 3 than I'd need to be exact on this ratio. 4s matter a bit less in this deck since most won't want to digivolve + the ones that do can stick around because of their power. My 5s are so flexible being that many of them are yellow/reds so my low splash of red, mainly to have Marcus + Gaia, is not hurt by having more yellows. I teched in Skullgreymon of course because of his on play effect but also since he doesn't need to stay on board he can fill a gap, if I draw him, to get to ShineGreymon. ShineGreymon is certainly a win condition especially paired with Marcus. I go heavier with yellow 6 mons though so that I can get to Chaosmon more reliably. But keep in mind this deck only runs one, so it should not be your prayer, rather a good tempo turn around should you draw him into a good field or hand. You draw a decent amount with Pulsemon + Heir to Dragons, which I would really love to somehow have another of, so drawing your win pieces before they are trashed or Recovery-ed is not hard to do. The deck has a "decrease your opponents DP" flavor all round that is less than a yellow Shine deck but enough to synergize with the red removal that I have in here.

My red to yellow split is directly related up from my split in my Digitama. I originally had two Poromon when I started building this but it made it hard to keep my red 3s so low + so yellow-centric. A lot of my Digimon in this are fine being played vs digivolved into, especially my reds, so having the consistency of flipping a yellow egg and having something to put on top felt better than being red egg locked.