Hollow Mystical Tree

Trample and Infect
When Hollow Mystical Tree enters the battlefield all Mystical Trees you control deal 1 damage to any target opponent, creature or Planeswalker.
When Hollow Mystical Tree leaves the battlefield, if it was destroyed or exiled destroy or exile target creature. If it was dealt damage deal that much damage to target opponent, creature or Planeswalker.
Get away creep!