Q1: Can this card's On Deletion effect be placed on the digivolved digivolved card of the "Shooting Starmons" that I played, unless I have both "Starmons" and "Pickmons" in my trash?
No. Only one of the two can be placed on the digivolution card.
Lv.3 Starmons BT19-031 C Rookie | Data | Major/Xros Heart [Digivolve] Lv.2 w/[Xros Heart] trait: Cost 0 <Decoy ([Xros Heart] trait)> [On Deletion] You may play 1 [ShootingStarmon] from under your Tamers without paying the cost. Then, place 1 [Starmons] and 1 [Pickmons] from your trash as that Digimon's bottom digivolution cards. --- Inherited: [When Attacking] [Once Per Turn] If this Digimon has the [Xros Heart] trait, 1 of your opponent's Digimon gets -2000 DP for the turn.
Lv.3 Starmons BT19-031 C Rookie | Data | Major/Xros Heart [Digivolve] Lv.2 w/[Xros Heart] trait: Cost 0 <Decoy ([Xros Heart] traits)> [On Deletion] You may play 1 [ShootingStarmon] from under your Tamers without paying the cost. Then, place 1 [Starmons] and 1 [Pickmons] from your trash as that Digimon's bottom digivolution cards. --- Inherited: [When Attacking] [Once Per Turn] If this Digimon has the [Xros Heart] trait, 1 of your opponent's Digimon gets -2000 DP for the turn.
Lv.3 スターモンズ BT19-031 C 成長期 | データ種 | メジャー型/クロスハート 特徴に「クロスハート」を持つLv.2:コスト0 ≪デコイ《特徴「クロスハート」》≫ 【消滅時】自分のテイマーの下から、「シューティングスターモン」1枚をコストを支払わずに登場できる。その後、自分のトラッシュの「スターモンズ」と「ピックモンズ」1枚ずつをそのデジモンの進化元の下に置く。 --- Inherited: 【アタック時】[ターンに1回]このデジモンが特徴に「クロスハート」を持つなら、ターン終了まで、相手のデジモン1体をDP-2000。