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Card Details
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.
1/1
Illustrated by Chris Seaman
Rulings (1)
Jan 19, 2018
Playing a land won't cause any of Border Guardian's abilities to trigger. But for the record, Unstable basic lands don't have a border.