Q1: Does the condition of digivolvesdigivolution from the tamer of this card also treat the tamer as a digivolution card and digivolves as a digimon?
No, digivolution as it is from tamer.
Q2: If a digivolves from a tamer in the digivolution condition of this card, is the digimon treated as a digivolves?
No, Digimon is not considered as digivolves. When a tamer digivolves from a digivolution condition on this card, "When Digimon digivolves" does not trigger.
Q3: If the digivolved from tamer in the digivolution condition of this card, is the digimon treated as digivolved?
No, Digimon is not considered digivolved. The digivolution condition of this card does not trigger "when Digimon is digivolved" when digivolved from tamer.
Lv.4 Grumblemon BT18-012 C Hybrid | Variable | Demon [Digivolve] [Gigasmon]: Cost 0 [On Play] [When Digivolving] Delete 1 of your opponent's Digimon with 3000 DP or less. --- Inherited: [When Attacking] [Once Per Turn] Delete 1 of your opponent's Digimon with 3000 DP or less.
Lv.4 Grumblemon BT18-012 C Hybrid | Variable | Demon [Digivolve] [Gigasmon]: Cost 0 [On Play] [When Digivolving] Delete 1 of your opponent's Digimon with 3000 DP or less. --- Inherited: [When Attacking] [Once Per Turn] Delete 1 of your opponent's Digimon with 3000 DP or less.
Lv.4 グロットモン BT18-012 C ハイブリッド体 | ヴァリアブル種 | 鬼人型 「ギガスモン」:コスト0 【登場時】【進化時】DP3000以下の相手のデジモン1体を消滅させる。 --- Inherited: 【アタック時】[ターンに1回]DP3000以下の相手のデジモン1体を消滅させる。