聖トラフトの霊

呪禁（このクリーチャーは、対戦相手がコントロールする呪文や能力の対象にならない。）
聖トラフトの霊が攻撃するたび、飛行を持つ白の４/４の天使・クリーチャー・トークンを１体、タップ状態かつ攻撃している状態で戦場に出す。戦闘終了時に、そのトークンを追放する。

Geist of Saint Traft

Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Whenever Geist of Saint Traft attacks, create a 4/4 white Angel creature token with flying that's tapped and attacking. Exile that token at end of combat.

Shadows of the Past

Crimson Vow Commander

Hexproof
Whenever Geist of Saint Traft attacks, create a 4/4 white Angel creature token with flying that's tapped and attacking. Exile that token at end of combat.

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Hexproof (This creature can't be the target of spells or abilities your opponents control.)
Whenever Geist of Saint Traft attacks, put a 4/4 white Angel creature token with flying onto the battlefield tapped and attacking. Exile that token at end of combat.

Geist of Saint Traft is banned as a commander in Duel Commander format, but it may be part of your deck.

Although the Angel is an attacking creature, it was never declared as an attacking creature. This means that abilities that trigger whenever a creature attacks won't trigger when it enters the battlefield attacking.

Any effects that say that the Angel can't attack (such as that of Propaganda) affect only the declaration of attackers. They won't stop the Angel token from entering the battlefield attacking.

If you create more than one Angel token (most likely due to Doubling Season), both are exiled at end of combat. On the other hand, if something else becomes a copy of the Angel token, the copy isn't exiled.

You choose which player or planeswalker the Angel token is attacking. It doesn't have to be attacking the same player or planeswalker that Geist of Saint Traft is attacking.