Rulings
Q1: My opponent's suspended Digimon unsuspends during my unsuspend phase using Reboot. Does this card's Start of Your Turn effect activate?
Yes, it does. Start of Your Turn effects activate before your unsuspend phase.
Q2: I attack with a green level 5 Digimon, and use this card's Your Turn effect to reveal a green level 6 Digimon card. Do I have to digivolve into that card?
No. The effect reads, "you may," so you can choose not to digivolve.
Q3: This card's Your Turn effect revealed 2 or more green level 6 Digimon. Can I choose which card to digivolve into?
Yes, you get to choose which card to digivolve into.
Q4: I attack with a green level 5 Digimon, and use this card's Your Turn effect to digivolve it. Do I get to draw a bonus card from digivolving?
Yes, you do.
Q5: This card's Your Turn effect revealed a non-green level 6 Digimon card. Can I digivolve into that card?
No, you can't.
Q6: I have 2 copies of this Tamer in play, and attack with a green level 5 Digimon. Can I suspend both Tamers, reveal 6 cards from my deck, and choose a card to digivolve into from among them?
"You can choose to activate this card's effect twice off a single attack, but you can't activate both effects simultaneously. Instead, you activate each Tamer's effect one at a time. First, activate the first Tamer's effect, reveal 3 cards from your deck, and choose whether or not to digivolve the attacking Digimon. From there, you can decide whether or not to activate the second Tamer's effect. Furthermore, if you digivolve into a card revealed from the first Tamer's effect, the card revealed from the second Tamer's effect must be a green level 6 card that can digivolve from a level 6 Digimon. (i.e. BT5-056 Rafflesimon)"
Q7: If I use this card's Your Turn effect to digivolve into a level 6 Digimon with a When Digivolving effect, when does that effect activate?
It activates immediately after you draw the bonus card for digivolving. Even if there are other When Attacking or "When one of your Digimon attacks" effects, the When Digivolving effect activates first as a newly triggered effect.
Q8: If I use this card's Your Turn effect to digivolve into a level 6 Digimon with a When Attacking effect, does that effect activate?
No. The window for activating When Attacking effects has already passed, so the effect doesn't activate.
Data Sources
Izzy Izumi & Mimi Tachikawa BT5-089 R [Start of Your Turn] If your opponent has a suspended Digimon in play, gain 2 memory.[Your Turn] When you attack with a level 5 green Digimon, you may suspend this Tamer to reveal 3 cards from the top of your deck. You may digivolve 1 green level 6 Digimon card among them onto the attacking Digimon without paying its memory cost. Place the remaining cards at the bottom of your deck in any order. --- Inherited: -
Izzy Izumi & Mimi Tachikawa BT5-089 R [Start of Your Turn] If your opponent has a suspended Digimon in play, gain 2 memory.[Your Turn] When you attack with a level 5 green Digimon, you may suspend this Tamer to reveal 3 cards from the top of your deck. You may digivolve 1 green level 6 Digimon card among them onto the attacking Digimon without paying its memory cost. Place the remaining cards at the bottom of your deck in any order. --- Inherited: [Security] Play this card without paying its memory cost.
Izzy Izumi & Mimi Tachikawa BT5-089 R [Start of Your Turn] If your opponent has a suspended Digimon in play, gain 2 memory. [Your Turn] When you attack with a level 5 green Digimon, you may suspend this Tamer to reveal 3 cards from the top of your deck. You may digivolve 1 green level 6 Digimon card among them onto the attacking Digimon without paying its memory cost. Place the remaining cards at the bottom of your deck in any order.
泉光子郎＆太刀川ミミ BT5-089 R 【自分のターン開始時】レスト状態の相手のデジモンがいるとき、メモリーを+2する。 【自分のターン】緑のLv.5の自分のデジモンがアタックしたとき、このテイマーをレストさせることで、自分のデッキの上から3枚オープンする。その中の緑のLv.6のデジモンカード1枚に、アタックしたデジモンからコストを支払わずに進化できる。残ったカードは好きな順番でデッキの下に戻す。 --- Inherited: 【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。