CardName: Panic Button
Cost: {g/w}
Type: Instant
Pow/Tgh: /
Rules Text: Oath (If you cast this spell from your hand, exile it as it
resolves. At the beginning of your next upkeep, cast it from
exile without paying its mana cost.)
If this spell was cast during combat, end the combat phase.
Until your next upkeep, creatures you control can't block.
Flavour Text:
Set/Rarity: --- None
Panic Button
Instant
Oath (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, cast it from exile without paying its mana cost.)
If this spell was cast during combat, end the combat phase.
Until your next upkeep, creatures you control can't block.
You misspelled "rebound" as "oath".
Rebound is a may. This is specifically designed to force being cast again, as a drawback