This is a multiplayer deck I'm working on that plays on the combo of Dovescape
+
Humility
to force everything that my opponents play to be a 1/1 creature.
The ultimate goal of this deck is not to lock down the field, which is why I've avoided cards like Orim's Prayer. If I lock down the field like that then everyone usually forfeits the game the moment I get the combo out. This is also why I've avoided cards like Guile. I don't want to automatically win the moment I throw down dovescape, I just want to turn the entire game into a no holds barred battle of the 1/1 doves, and ensure that my dove army is the biggest of all.
Main Combo
Humility: Weakens my opponent's creatures and delays the game enough for me to get out Dovescape. Prevents my opponents from having any pesky creature abilities to foil my strategy.
Dovescape: Turns everything else my opponents cast into 1/1 creatures to. Now everything on the field is a 1/1 creature, every card cast is also 1/1 creatures, and nobody can do anything to change that. This turns the whole game into a weenie war.
Support
Leyline of Sanctity: Much needed protection. Without creatures in the deck I need to make sure that my opponents can't hurt me while I work on the combo.
Sterling Grove: Necessary enchantment protection plus a bonus tutor is too good to pass up.
Enlightened Tutor, Commune with the Gods, Kruphix's Insight: Get the enchantments I need into my hand. Always nice to play Enlightened Tutor or sack a Sterling Grove before the other two to make sure I get what I want.
Wild Growth, Fertile Ground: Mana ramp and searchable mana for my tutors. Also means less lands are needed in the deck for after the combo goes off and I need doves.
Aura Shards: After the combo goes off this lets me destroy everything on the field that isn't a creature.
Multani's Presence: After the combo goes off Multani's Presence allows me to draw a card after every time I make doves. I try to get at least one of these out before the combo unless I'm really desperate. Makes sure I always have the most doves.
Abundance: Refines my card draw. If I have this and Multani's presence out with the combo I can always have dove power in my hands.
Replenish: If anyone has a lot of enchantment destruction ready for me I can use this as a backup to get my enchantments back out. Also brings back any enchantments that were left behind by Kruphix's Insight and Commune with the Gods.
Sideboard
50 or 60 bird tokens
Weaknesses
More early game protection that doesn't give me an unfair advantage in the dove war would be nice. Also anything to get the combo out quicker. Mana base could probably also use some help. Any other advice to strengthen the deck is appreciated.