When we build digivolution source for Cresgarurumon, we can build it in raising area to keep it safe. Once we move out, we can do digiburst-2 twice to play 2 LV3 digimon. The digi-burst (twice) from Cresgarurumon provides at least 1 LV5, 1 LV4 and 1 LV3 digimon in trash. After checking security or attack opponent's digimon with this digimon, we can digivolve to Omegamon Zwart from this Cresgarurumon to retrieve up-to 2 digimon from trash. We can choose to retrieve Kimeramon, and/or a blocker or a retaliation digimon. With [BT2-077] Kimeramon, we can destroy 1 LV3 digimon that played during Cresgarurumon digibursting to destroy 1 of opponent's LV5 or less
Beside the combo of Kimeramon and Cresgarurumon, we also can consider Cerberusmon combo. If we can retrieve [BT4-083] Cerberusmon during digivolution phase of Omegamon Zwart, we can destroy this digimon to play LV5 [BT4-086] Cerberusmon:werewolf Mode and attack opponent's digimon or security at same turn. It's too bad because Cerberusmon: Werewolf Mode takes 9 costs to play… if it's 8 cost, then we can retrieve from trash for free with Omegamon Zwart effect. The benefit of using Cerberusmon is because "when destroyed", it gives 'draw 2 then trash 1', more cards more choice to play.