Avalon, Archangel of Rebirth

A figment double-faced card enters the arena with the figment-side active. It is only “flipped” when another effect flips them. E.g. Awaken, on Prism, Advent of Thrones

When a figment double-faced card leaves the arena, it “resets” and the figment side becomes the active side again.

Banishing a card when attacking is optional.

If this is destroyed (e.g. Ward) before its attack resolves (resolution step), the combat chain closes. If this is destroyed after the attack resolves, the combat chain does not close.

If this is destroyed (e.g. Ward) while its “when this attacks” triggered effect is waiting to resolve on the stack, the combat chain will close and the triggered effect will still resolve giving you the option to banish a card from soul and put a yellow card from your graveyard on top of your deck.

If this is destroyed while being the target of an opponent’s attack (e.g. because of Ward); if it is during the layer step, the combat chain will close; if it is the attack step or later in combat, the combat chain will not close.

If you choose to banish a card from your hero’s soul, putting a yellow card from the graveyard to the top of your deck is not optional.

You must show your opponent the yellow card you’ve chosen to put from your graveyard to on top of your deck.