Let me begin by saying, this deck is not a finished product, and any suggestions to add some competitive power would be welcome. I understand choosing Rebels tribal is not a super-powerful choice, but I like trying to make less powerful strategies work, and it is my hope we can work together to make the best EDH Rebels deck possible.
This deck is a white weenie deck which, ideally, casts very few creatures. Under ideal circumstances (and this being Commander, "ideal" is never guaranteed), the plan is to get enough mana to allow Lin Sivvi, Defiant Hero, and maybe a few other Rebels with the recruit mechanic, to recruit a number of creatures to the board, boost them with anthems and Akroma's Memorial, and then give them a huge boost with Mirror Entity (changeling means it's a Rebel, too!) to swing out and kill someone (or maybe everyone; this is white weenies, and there are always much more dangerous things on the table for people to be punching each other over instead of you).
The Commander gives this deck more survivability than most other white weenies. Lin Sivvi's second ability allows you to move Rebels from your graveyard to the bottom of your library. Normally, a creature on the bottom of the library in mono-white is as good as gone, but that's where Lin shines: her first ability then comes back into play, letting you recruit them right back out. As a result, Lin doesn't need to worry about drawing new creatures. You get to rebuild after boardwipes faster than many decks, and her low CMC means it will require several instances of removal before casting her becomes a strain on resources. There's also a Mistveil Plains, because it recovers creatures, or removed/discarded spells.
There are three boardwipes in the build, too, two of which allow you to skip a major step in Recruit rebuilding: Hallowed Burial and Terminus. These put all creatures directly to the bottom of the library, which both hoses graveyard-matters strategies AND immediately puts your Rebels right back where Lin can recruit them again. The deck also runs Wave of Reckoning, because when paired with Builder's Blessing, there isn't a single creature in the deck that dies to it (though you can't attack that turn with many of your creatures without Memorial in play), and even without Blessing, Lin survives it, which means you can recover and recruit again with barely a hiccup.
In the event of needing to play a long game, there are two ways to keep the life total up. The more fair one is Children of Korlis. Children on the board means an opponent has to one-shot you to kill you, because otherwise Children will just get sac'ed and you'll get all your life back. If you have Lin and a few other recruiting Rebels in play, along with some extra mana, it's entirely possible to then immediately recover Children with Lin's second ability, recruit Children again, and then sac Children again (because its sac ability doesn't require tapping!) to gain that amount of life again, then do it again if you still have mana and a recruiter available.
Edit: my LGS gained a Test of Endurance, which I quickly snapped up, to allow the potential life gain this deck possesses to become an alternate win condition. Also, Emeria, The Sky Ruin, because the only thing better than getting to recruit needed utility creatures repeatedly is having a land that brings them back automatically. /Edit
The second method is a combo: Outrider en-Kor + Task Force + Miren, the Moaning Well.
There's a Basilisk Collar, because when paired with Ballista Squad and Thousand-Year Elixir (which is an all-star in this deck), attacking you just kinda becomes hilarious (well, for you, anyway). Speaking of removal, most targeted removal in this deck exiles its target, because that's one less thing your tiny Rebels have to contend with for the game, and exile laughs at indestructibility. Someone sending a huge beatstick to you? Swords to Plowshares or Avenger en-Dal (you can always discard a rebel or unneeded land for the Avenger). Someone drop a Nev Disk and you want to keep your board? Forsake the Worldly. Did the blue player allow Eldrazi Conscription to hit the field? Forsake, or Righteous Confluence (also good for removing pillow forts in one fell swoop). Then, there's the times Exile still doesn't cut it, because it has hexproof or shroud (anyone who's faced a Narset, Enlightened Master deck understands). If it still likes to attack, like Narset, or of it's used primarily as a blocker, the Rebels have an extra tool at their disposal: Bound in Silence. The Recruit mechanic allows you to pull any Rebel PERMANENT from your library to the battlefield. When Bound in Silence is recruited in this manner, it ETBs enchanting whatever you want, and because it only counts as targeting if it uses the stack (which it doesn't when it's recruited), it can even hit hexproofed or shrouded creatures. Even the Rebels get in on the removal action: Lawbringer and Lightbringer exile one target red and black creature, respectively, for the cost of tapping and sac'ing (as we know by this point, this is no real setback for Lin Sivvi, as she can just get them back). Is the offending creature white, blue, green, or colorless? Distorting Lens it to whatever color you need. Lens also plays well with Pro-Red or Pro-Black, which Memorial grants, and two of your flying Rebels come with already.
There are some cards I know I want to add, but I'm not sure where to cut. Pariah seems like a good idea, for example, because it becomes completely silly when attached to Cho-Manno, Revolutionary. Path to Exile, as well, seems an obvious choice, but I didn't have one when the deck was originally built. I'm also considering swapping Moment of Silence for Holy Day, but I would prefer finding a way to allow them to coexist.
