Border Guardian

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.

USD reference: $0.10 (~₱6.30) · Foil: $0.26 (~₱16.38)