To add on the "defensive" strategy for green, now it is maybe the right time to bring out Rosemon from your binder to use in new meta. The Rosemon from starter deck gives the "When digivolving" effect that 1 of opponent's digimon cannot block or attack until end of opponent next turn, and the Rosemon from BT1 is to rest 1 of opponent's digimon in opponent turn if opponent's digimon attack security on the condition that she is rested.
To use BT1 Rosemon effectively, we can make the combo with [BT4-059] Lilamon and the new Tamer [Bt5-089] Izzy Izumi & Mimi. Lilamon can do digiburst to rest 1 opponent digimon with lower DP and then attack it, then if we have the Tamer Izzy Izumi&Mimi play in the battle, you can digivolve to the LV6 Rosemon without cost in rested state, Rosemon will be useful in opponent turn. This Rosemon needs to accompany with starter deck Rosemon or Wisselen option card, if these cards helps to cast spell on higher DP digimon so that they cannot block or attack in opponent's next turn. Seeing Rosemon in the battle also makes lower DP digimon hesitates to attack security.
It is the same strategy to use [BT5-055] BanchoLilymon, digivolving into this digimon from Lilamon after Lilamon attacks. Even it is rested, opponent won't dare to destroy Bancholilymon, so next turn we can digivolve it into Chaosmon.