Rulings
Q1: Does this card's digivolution requirement where it can digivolve from a Tamer mean that the Tamer that will become a digivolution card is treated as a Digimon when it digivolves?
No, it digivolves from the Tamer as-is.
Q2: When a Tamer would digivolve using this card's digivolution requirement, is it considered a Digimon that would digivolve?
No, it isn't considered a Digimon that would digivolve. When a Tamer would digivolve using this card's digivolution requirement, "when a Digimon would digivolve" effects don't trigger.
Q3: When a Tamer digivolves using this card's digivolution requirement, is it considered a Digimon that digivolves?
No, it isn't considered a Digimon that digivolves. When a Tamer digivolves using this card's digivolution requirement, "when a Digimon digivolves" effects don't trigger.
Data Sources
Lv.4 Zephyrmon BT18-049 R Hybrid | Variable | Birdkin [Digivolve] [Zoe Orimoto]: Cost 3/[Kazemon]: Cost 1 <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [On Play] [When Digivolving] 1 of your Digimon gets +3000 DP until the end of your opponent's turn. --- Inherited: <Piercing> (When this Digimon attacks and deletes your opponent's Digimon in battle, it checks security before the attack ends.)
Lv.4 Zephyrmon BT18-049 R Hybrid | Variable | Birdkin [Digivolve] [Zoe Orimoto]: Cost 3/[Kazemon]: Cost 1 <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [On Play] [When Digivolving] 1 of your Digimon gets +3000 DP until the end of your opponent's turn. --- Inherited: <Piercing> (When this Digimon attacks and deletes your opponent's Digimon in battle, it checks security before the attack ends.)
Lv.4 Zephyrmon BT18-049 R Hybrid | Variable | Birdkin [Digivolve] [Zoe Orimoto]: Cost 3/[Kazemon]: Cost 1 <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.) [On Play] [When Digivolving] 1 of your Digimon gets +3000 DP until the end of your opponent's turn. --- Inherited: <Piercing> (When this Digimon attacks and deletes an opponent's Digimon, it performs any security checks it normally would.)
Lv.4 シューツモン BT18-049 R ハイブリッド体 | ヴァリアブル種 | 鳥人型 「織本泉」:コスト3/「フェアリモン」:コスト1 ≪貫通≫ 【登場時】【進化時】相手のターン終了まで、自分のデジモン1体をDP+3000。 --- Inherited: ≪貫通≫（このデジモンがアタックしたバトルで相手のデジモンを消滅させたとき、アタック終了前にチェックする）