"Of course it will grow beyond control - it was designed to choose its own evolution"
I wanted to make this deck because Experiment Kraj just looks so cool, and he has so much cool flavour! This is a budget combo deck (wow you don't hear that one too often do you?), the basis of the deck is to use untap abilities to untap the Kraj and use counter adding/doubling effects and card draw effects to end the game fairly quickly. Usually the infinite combo consists of having ramp creatures such as Argothian Elder and untapping creatures such as Horseshoe Crab, effectively allowing you to generate infinite mana and untap an infinite amount of times. It is a fun deck to play against however, as the combo doesn't usually set off until turn 6/7 or so, so there are ways of dealing with it. I haven't tried it in a 4-way but I think that it wouldn't work too badly as overall it is an interesting deck, and people do commend you when you pull off something unexpected.
The Combo
Experiment Kraj puts a +1+1 counter on an untapping creature such as Horseshoe Crab, then puts a +1+1 counter on a mana dork, such as Argothian Elder. If the mana dork can only produce , then mana fixing creatures such as Magus of the Candelabra can help with the combo. Pay mana (usually ) to untap, tap to get and some other mana, untap, do this until you have infinite mana, then start adding counters to your creatures (and using your stored mana to untap). You now have infinity/infinity creatures and infinity mana. Attack, and hopefully use some sort of evasion. If anything goes wrong, the card draw creatures are there to let you draw as many cards as you want in order to counter spells and the like.
Card Breakdown
Aphetto Alchemist, Kiora's Follower, Magewright's Stone, Prophet of Kruphix, Thousand-Year Elixir, Nature's Chosen, Quest for Renewal
Devoted Druid, Gilder Bairn, Horseshoe Crab, Knacksaw Clique, Leech Bonder, Locust Swarm, Morphling, Pili-Pala, Vigean Graftmage, Umbral Mantle, Freed from the Real, Pemmin's Aura
Arcanis the Omnipotent, Archivist, Enclave Cryptologist, Fathom Mage
Argothian Elder, Devoted Druid, Elvish Aberration, Fertilid, Gyre Sage, Joraga Treespeaker, Karametra's Acolyte, Krosan Restorer, Pili-Pala, Somberwald Sage, Viridian Joiner, Simic Signet
Magus of the Candelabra, Argothian Elder, Orochi Leafcaller, Pili-Pala
Beguiler of Wills, Callous Oppressor, Cytoplast Manipulator, Mystic Snake, Prophet of Kruphix, Razorfin Abolisher, Simic Manipulator, Spike Weaver, Ulvenwald Tracker, Leech Bonder
Cephalid Inkshrouder, Locust Swarm, Morphling, Spike Weaver, Thornling Cauldron of Souls, Lightning Greaves, Whispersilk Cloak, Pemmin's Aura
Other cards may not be present in this list, but are in the deck because they are staples for this kind of deck, or because they don't really need their own section
Combos
Combo 1: Argothian Elder or Krosan Restorer + Horseshoe Crab, Knacksaw Clique, Leech Bonder, Morphling, Pili-Pala, Vigean Graftmage, Freed from the Real or Pemmin's Aura
Combo 2: Any Green Ramp + Magus of the Candelabra, Argothian Elder or Orochi Leafcaller + Krosan Restorer + Horseshoe Crab, Knacksaw Clique, Leech Bonder, Morphling, Pili-Pala, Vigean Graftmage, Freed from the Real or Pemmin's Aura
Combo 3: Any Green Ramp + Gilder Bairn, Pili-Pala or Umbral Mantle
Combo 4: Devoted Druid + Hardened Scales or Illusionist's Bracers
Combo 5: Combo 1, 2, 3 or 4 + Arcanis the Omnipotent, Archivist, Enclave Cryptologist or Fathom Mage
Combo 6: Combo 1 or 2 + Knacksaw Clique
Combo 7: Combo 1, 2, 3 or 4 + Beguiler of Wills, Callous Oppressor, Cytoplast Manipulator, Razorfin Abolisher, Simic Manipulator, Ulvenwald Tracker
Combo 8 (In a 1v1): Spike Weaver +
Combo 9 (Multiplayer): Combo 1, 2, 3 or 4 + Spike Weaver
Note: If you have gotten to combo 5 you have won (if they try to do anything you can draw cards on the stack until you get what you need). If you get combo 1, 2, 3 or 4 you are pretty much guarenteed to win, although evasion might be needed (either way, you probably have at least 3 or 4 creatures that you can attack with and buff an infinite amount of times). Combo 6 and 7 are usually backup plans in case all else fails, and Combo 8 is great because Experiment Kraj
+
Spike Weaver
is just ludicrous on its own
Thanks for taking the time to look at my deck! Please comment suggestions and leave a +1 if you like it, it really helps me out!