Thorns, Destreza Prodigy

Reach, wither
{b}{g}: Activate this ability only if Thorns, Destreza
Prodigy has less than 2 toxin counters. Place a toxin
counter on Thorns. Then if Thorns has 2 toxin
counters on it, place four +1/+0 counters on it.
Otherwise it gets +2/+0 until end of turn. Activate
only as sorcery and only once per turn.
"The drugs I carry on me? They're not fatal, but it'd
be best not to touch them."