Unbreakable Formation is a rare Instant card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 710. Current market price: $1.25, TCGplayer market prices via Scryfall.
Creatures you control gain indestructible until end of turn. Addendum — If you cast this spell during your main phase, put a +1/+1 counter on each of those creatures and they gain vigilance until end of turn.
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