Trees don't provide cover, but give circumstantial bonuses to AC and Reflex saves when you share a square with them. The big ones block LoS however.

Start in Y10, weilding my Dagger, holding my Huge Dagger in my other hand.

Move Action: Move to R7

Rest of turn:
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Standard Action: Cast Mage Armour
Swift Action: Activate Law Devotion [+3 AC]


Stats:
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HP: 3/3
AC: 23 [FF 19, Touch 17]

Spells:

Level 0: Ray Of Frost x5
Level 1: Mage Armour, Shield, Colour Spray, True Strike

Law Devotion: 10/10 rounds remaining
Shadow Blade Technique: Unused

Mage Armour: 3,600/3,600 rounds remaining