While not infinite, you can equip Skullclamp to a series of tokens and sacrifice them to Ashnod's Altar to dig through your deck, generating some colorless mana that you can then use to cast some of what you draw
To get a top meta deck, click on the top decks button above
If you're looking for a few really devastating ones though, watch this video for a guide to 13 card combos across all colors that will make you deck the envy of you friends
Promo Info BOOSTER CROSS ENCOUNTER [BT-10] CLOSECLOSE BT10-105 C Option Defense Plug-In C Color Black Form - Attribute - Type - DP - Cost 12 Digivolve Cost 1 - Digivolve Cost 2 - Upper Text While you have a Tamer in play, you may use this card without meeting its color requirements.[Main] Until the end of your opponent's turn, 1 of your Digimon gains Blocker (When an opponent's Digimon attacks, you may suspend this Digimon to force the opponent to attack it instead), and Reboot (Unsuspend this Digimon during your opponent's unsuspend phase), and can't be deleted by your opponent's effects
Split cards, by definition, can only be instants or sorceries as the rules don't want half a split card on the battlefield