Do you play against losers who use Mana Leak and/or Syncopate? or some other equivalent? why not have nearly limitless mana? that'll learn em to mana leak you.
Strategy is simple really, you use lands to make mana, use it to summon cheap defenders like Fog Bank and
Vine Trellis
, then play Axebane Guardian and/or Overgrown Battlement to start pumping out absurd amounts of mana.
What you want more?
fine, use a kicked Rite of Replication on axebane, get 5 more axebanes and increase the amount all of them and the battlement's tap for by 5, then maybe even follow up that with an Infinite Reflection all of your creatures are now axebane, Exponential mana!
Then at that point since you can create nearly limitless rainbow mana use realy anything with x cost, in this build I use Mind Grind, if you can pay X at least equal to 1 more than the enemy has in the deck you win, and then
Doorkeeper
just helps speed things along by providing constant pressure, and then if you also have Phenax, God of Deception all of your defenders mill, just remember to use
Doorkeeper
's effect and not the effect given to him from Phenax, God of Deception if the number of defenders you control is greater than his toughness.
Oh! did I mention using
Upwelling
to ensure you quite literally have no limit on mana and never run out, just generate in response to your opponent's end step before you untap, and save for later while having defenders at the ready.
In all honestly this deck is a shell, you can very easily modify it to fit better with your budget, you can cut out Sylvan Caryatid, Phenax, God of Deception,
Doorkeeper
and of course my fave piece of the deck Mind Grind and really replace with anything, although you only want to remove the Sylvan Caryatid if you decide having rainbow mana isn't important to you, IE using only green or only using 2 colors, seriously, grab a Primordial Hydra or maybe a Sorin's Vengeance if that's what you're into. I know someone with a similar setup who uses Nicol Bolas, Planeswalker in this sort of build as a win con.