Powers

Rank 1

• Barkskin: recharge 33%, swift, sustained; you are protected by roots, vines, and bark, gaining Absorb 50% (piercing, slashing, bludgeoning), limit heavy damage.
• Entangle: at-will, std, ranged; target is restrained (Str ends).
• Shillelagh: at-will, swift, sustained; transmute a small stick into a club, or a large stick into a staff, the former inflicting medium bludgeoning damage (one-handed) and the latter heavy bludgeoning damage (two-handed). Moreover, the weapon gains one bonus of your choice: Keen, Mighty, or Swift, at your current rank.
• Vine Ward: recharge 33%, swift, ranged, concentration; you conjure 5 vines per rank, each of which is a medium creature, immobile, with HP equal to medium damage. They can't attack, but they do threaten an area (1 square reach), and can use their reaction to attempt to interrupt movement (rolling your casting stat vs Str to negate; if save fails, movement action ends).

Rank 2

• Entangle is now a burst 1/rank.
• Wall of Thorns: recharge 33%, swift, ranged, concentration, wall 1/level; wall of thick, thorned vines is difficult to cross, requiring a std action to do so, as well as a Strength check against your DC, and either way the creature suffers heavy piercing damage. Wall blocks line of effect and sight. Each segment has HP equal to heavy damage, with Resist (50%) to piercing and bludgeoning, and Vulnerability to fire.

Feats

• Thorns: your plant-based effects sprout sharp thorns. Attackers striking you while Barkskin is active suffer medium piercing damage. Enemies who are entangled suffer medium piercing damage each time they attempt a save to end. Etc.

Rank 2

• Phytotoxin: your plant-based spells that inflict damage also inflict medium ongoing poison damage (Con ends).