Reach

Whenever Venn, Arboreal Marksman deals combat damage to a player, you may create a 1/1 green bird creature token with {T}: Add {1} mana of any color or a 1/1 green insect creature token with Deathtouch

Whenever an Bird or Insect token you control deals combat damage to a player, add {G} to your mana pool. You do not lose this mana until the end of the current turn.