Gallow, End of the Line (Marvel) Cold Foil Overnumbered whenever an aura permanent you

whenever an aura permanent you control with Sigil in its name leaves the arena

then if it has 0SHIELD

The next card you play this turn with an effect that deals arcane damage

put a -1 [Defense] counter on it when the combat chain closes

You may put them on the top and/or bottom in any order

Gallow, End of the Line (Marvel) Cold Foil Overnumbered whenever an aura permanent youAction [1 Resource],TAP: Attack Instant TAP, discard a card with watery grave: Until end of turn, effects controlled by opponents don't trigger when their attacks hit. Watery Grave (When this is put into your graveyard from the arena, turn it face down.)