Q1: Which Digimon card can be played by this card's On Deletion effect?
Digimon cards that can be played by this card's On Deletion effect are "play cost 4 or less with 'NSp' in the characteristics" or "yellow play cost 4 or less".
Lv.5 Piximon EX7-028 C Ultimate | Data | Fairy/NSp [Digivolve] Lv.4 w/[NSp] trait: Cost 3 [On Deletion] You may play 1 play cost 4 or lower Digimon card that is yellow or has the [NSp] trait from your hand without paying the cost. --- Inherited: [When Attacking] [Once Per Turn] 1 of your opponent's Digimon gets -4000 DP for the turn.
Lv.5 Piximon EX7-028 C Ultimate | Data | Fairy/NSp [Digivolve] Lv.4 w/[NSp] trait: Cost 3 [On Deletion] You may play 1 play cost 4 or lower Digimon card that is yellow or has the [NSp] trait from your hand without paying the cost. --- Inherited: [When Attacking] [Once Per Turn] 1 of your opponent's Digimon gets -4000 DP for the turn.
Lv.5 Piximon EX7-028 C Ultimate | Data | Fairy/NSp [Digivolve] Lv.4 w/[NSp] trait: Cost 3 [On Deletion] You may play 1 yellow or [NSp] trait Digimon card with a play cost of 4 or less from your hand without paying the cost. --- Inherited: [When Attacking] [Once Per Turn] 1 of your opponent's Digimon gets -4000 DP for the turn.
Lv.5 ピッコロモン EX7-028 C 完全体 | データ種 | 妖精型/NSp 特徴に「NSp」を持つLv.4:コスト3 【消滅時】自分の手札から、特徴に「NSp」を持つか黄の登場コスト4以下のデジモンカード1枚をコストを支払わずに登場できる。 --- Inherited: 【アタック時】[ターンに1回]ターン終了まで、相手のデジモン1体をDP-4000。