While it only taps for Colorless mana normally, it can become whatever you want
BT17-049 C Digimon Lv.5 Antylamon Color Green Purple Cost 8 DP 8000 Digivolve Cost 1 GreenPurple 4 from Lv.4 Form Ultimate Attribute Virus Type Holy Beast Card Text 1 [Special Digivolution Condition] [Digivolve] [Turuiemon]/[Wendigomon]: Cost 3 [Effect] Alliance [When Digivolving] You may play 1 level 3 green or yellow Digimon card from your trash without paying the cost
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So, when choosing trainer cards, ensure that out of 25 trainer cards, you have 5-8 cards, making it possible to take cards from the deck/discard if you have a few useful cards in your hand
For example, from a defending perspective, Grass-type Pokmon like Tangela are weak against Flying-, Poison-, Bug-, Fire-, and Ice-type attacks but strong against Ground-, Water-, Grass-, and Electric-type attacks
Its spell also can't be countered