Q1: Can I also use this card's On Play When Digivolving effect to delete my Digimon or Tamer?
Yes, you can delete a Digimon or Tamer.
Q2: When this card would be deleted, I used this card's <Material Save> to place a card from this card's digivolution cards under my Tamer. Can I then use this card's On Deletion effect to play the card that was placed under my Tamer by <Material Save>?
Yes, you can.
Lv.5 DarkKnightmon BT19-063 R Ultimate | Virus | Dark Knight/Twilight <Material Save 1> [On Play] [When Digivolving] <De-Digivolve 1> 1 of your opponent's Digimon. Then, if DigiXrosing with 2 cards, you may delete 1 play cost 3 or lower Digimon or Tamer. [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from under your Tamers without paying the cost. DigiXros -2: [SkullKnightmon]×[DeadlyAxemon] When this would be played, you may place specified cards from the hand/battle area under it. Each one reduces the play cost. --- Inherited: [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from your trash without paying the cost.
Lv.5 DarkKnightmon BT19-063 R Ultimate | Virus | Dark Knight/Twilight <Material Save 1> [On Play] [When Digivolving] <De-Digivolve 1> 1 of your opponent's Digimon. Then, if DigiXrosing with 2 cards, you may delete 1 play cost 3 or lower Digimon or Tamer. [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from under your Tamers without paying the cost. DigiXros -2: [SkullKnightmon]×[DeadlyAxemon] When this would be played, you may place specified cards from the hand/battle area under it. Each one reduces the play cost. --- Inherited: [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from your trash without paying the cost.
Lv.5 DarkKnightmon BT19-063 R Ultimate | Virus | Dark Knight/Twilight <Material Save 1> [On Play] [When Digivolving] <De-Digivolve 1> 1 of your opponent's Digimon. Then, if DigiXrosing with 2 cards, you may delete 1 play cost 3 or lower Digimon or Tamer. [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from under your Tamers without paying the cost. DigiXros -2: [SkullKnightmon]×[DeadlyAxemon] --- Inherited: [On Deletion] You may play 1 level 4 or lower Digimon card with [Knightmon] in its text from your trash without paying the cost.
Lv.5 ダークナイトモン BT19-063 R 完全体 | ウィルス種 | 暗黒騎士型/トワイライト ≪マテリアルセーブ1≫ 【登場時】【進化時】相手のデジモン1体を≪退化1≫。その後、2枚デジクロスしていたなら、登場コスト3以下のデジモン/テイマー1体を消滅できる。 【消滅時】自分のテイマーの下から、「ナイトモン」の記述があるLv.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。 「スカルナイトモン」×「デッドリーアックスモン」 登場するとき、手札/バトルエリアからこのカードの下に置ける。1枚ごとに登場コストをマイナスする --- Inherited: 【消滅時】自分のトラッシュから、「ナイトモン」の記述があるLv.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。