Unstable · #140
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Whenever you cast a silver-bordered spell, put a +1/+1 counter on this creature. Whenever you cast a black-bordered spell, this creature can't be blocked this turn. Whenever you cast a white-bordered spell, this creature gains double strike until end of turn.
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Border Guardian (UST-140) is an artifact creature Knight printed in the Unstable expansion. It gains +1/+1 whenever you cast a silver‑bordered spell and has triggered bonuses for casting black‑ or white‑bordered spells that make it unblockable or give it double strike respectively. Its effects reference border types rather than colors, making its triggers interact uniquely with silver/black/white‑bordered cards in casual or silver‑border play.
Catalog pricing data as of 22 Apr 2026, 12:37
