Q1: Can I use this card's Your Turn effect to switch the target of attack to an opponent's unsuspended Digimon or Digimon with a "can't be attacked" effect?
Yes, you can. When using an effect that switches the target of attack after an attack declaration, you can also switch the target of attack to an opponent's unsuspended Digimon or Digimon with a "can't be attacked" effect.
Shoto Kazama ST18-14 R LIBERATOR [Start of Your Turn] If you have 2 or less memory, set it to 3. [Your Turn] When any of your Digimon attack your opponent's Digimon, by suspending this Tamer, you may change the attack target to another of your opponent's Digimon or a player. --- [Security] Play this card without paying the cost.
Shoto Kazama ST18-14 R LIBERATOR [Start of Your Turn] If you have 2 or less memory, set it to 3. [Your Turn] When any of your Digimon attack your opponent's Digimon, by suspending this Tamer, you may change the attack target to another of your opponent's Digimon or a player. --- [Security] Play this card without paying the cost.
Shoto Kazama ST18-14 R LIBERATOR [Start of Your Turn] If you have 2 or less memory, set it to 3. [Your Turn] When one of your Digimon attacks your opponent's Digimon, by suspending this Tamer, you may change the attack target to another of your opponent's Digimon or the player. --- [Security] Play this card without paying the cost.
風真照人 ST18-14 R リベレイター 【自分のターン開始時】メモリーが2以下なら、3にする。 【自分のターン】自分のデジモンが相手のデジモンにアタックしたとき、このテイマーをレストさせることで、アタックの対象を他の相手のデジモンかプレイヤーに変更する。 --- 【セキュリティ】このカードをコストを支払わずに登場させる。