$1.48 @ TCGplayer
Vigilance
When Byrke enters, put a +1/+1 counter on each of up to two target creatures.
Whenever a creature you control with a +1/+1 counter on it attacks, double the number of +1/+1 counters on it.
To double the number of +1/+1 counters on a creature, put a number of +1/+1 counters on it equal to the number it already has. Replacement effects that modify the number of counters being placed on creatures you control, such as the effect of Branching Evolution, apply to this ability as normal.
