Infinite Mana, Infinite Life Gain, Infinite/Infinite Creatures, and Infinite Damage to All Creatures with Flying
Keep in mind this is a very bad deck, the combo is super hard to pull off, and it is super complicated. I built this deck because I wanted to try and create my own infinite combo while only using one color (in this case Green) because I thought it would be fun, it was.
So here is the super long and complicated procedure:
You need the following cards on the battlefield: One Frontier Guide, One Kuldotha Forgemaster, One
Spitting Spider
, One Amulet of Vigor, One Lotus Cobra, At least One Forest, One Staff of Domination OR One Umbral Mantle, and At least Three Mana Reflections.
(1) Even with all of these in play you cannot get infinite mana unless you have less than a certain number of lands in play, if you have over that amount of lands you have to use
Spitting Spider
to sacrifice lands and then use Elixir of Immortality to put them back in your deck. Alternatively you can make it all work out much easier by just having more than one Lotus Cobra in play, by having more than one Amulet of Vigor in play, or by having four Mana Reflections in play.
So here is how the combo actually works:
Tap a Forest for 8-16 Green Mana (with 3-4 Mana Reflections each forest is chugging out tons of mana) then use 4 of the mana to activate Frontier Guide, you get a basic land and it comes into play untapped because of Amulet of Vigor, if you have more than one Amulet of Vigor in play then you can respond to the first untap trigger by tapping again so your Forest can produce double the normal amount of mana. As the Forest enters the battlefield it provides you an extra green mana through Lotus Cobra. So now, in total you have at least 5 mana. Next you must use Staff of Domination or Umbral Mantle (Umbral Mantle can be used continuously but Staff of Domination requires that you pay one mana to untap it after each activation in order to use it again) to untap your Frontier Guide. Now you still have an untapped Forest from the Frontier Guide activation. Use that Forest to produce more mana and then you use the mana to activate Frontier Guide yet again and then untap it yet again. You must keep repeating this process until you search for every Forest in the entire deck. Then tap your last forest and untap your Frontier Guide and if you are using Staff of Domination then untap it as well.
At this point you should have a lot of excess mana because after each activation of Frontier Guide you gain some mana that doesn't need to be used in the process. You need to have at least 17 mana for the combo to continue, since each activation of Frontier Guide nets you some mana, if you can't activate Frontier Guide enough times to get 17 mana because you run out of Forests to fetch then the combo cannot work. This is why the problem I displayed at (1) can happen.
Anyway if you do get the required 17 mana then here is what you must do. First off, use
Spitting Spider
to sacrifice all of your tapped Forests. Then activate Kuldotha Forgemaster by sacrificing all three of your Myr Retrievers. Since all the Myr Retrievers die at the same time, they can all target a different Myr Retriever with their death triggers. This is kind of a confusing process so here is a picture I drew to explain it. http://i.imgur.com/IQCdwnU.png
Use the Kuldotha Forgemaster activation to fetch for Elixir of Immortality. Then pay 2 mana to activate Elixir of Immortality which will shuffle the Forests back into the deck.
Then replay all your Myr Retrievers and untap your Kuldotha Forgemaster with Staff of Domination, then untap Staff of Domination. You should have at least 7 mana left at this point.
