So got to play one game with Mairsil, and it was a durdly one.
Must of drawn 15 cards from group hug before finding a board wipe....which was desperately needed.
So wipe plus Sire of Insanity sealed the deal, won the game.
Need to add 1x board wipe, 1x land/gy recursion, get rid of By Force, probably with Meltdown. The time I got By Force there were 18 artifacts in play, inc. Tanglewire, Caged Sun (blue), Skullclamp(elfball) among others.
Vandalblast would have been nice,
Probably slot in Null Rod since I can cage my Gilded lotus / Nevinyarrl's Disk.
Edit: Meltdown it is, null rod would hose me too much.
A few cards that I have been finding bonkers in my Chainer-centered Mairsil brew:
Sensei's Divining Top - Particularly when you don't have Aetherling, this is a great card for resiliency and repeated caging. Shows up often if you also run Trinket Mage to fetch it.
Soldevi Adnate - I find that most of the things that we want to repeatedly bring back with Chainer are Black, so great to have this one caged. In fact, games can end real fast with something like Basalt Monolith on top. Begin turn with Kokopuffs in play, sac it for mana then untap and bring it back with the mana for next turn. Drain four times an orbit.
Memnarch - Great for stealing other players' mana bases.
Nivix Guildmage - Can be expensive to fork a spell for this price, but both abilities are solid.
Illusionist's Stratagem/Ghostly Flicker - I see that you have Dualcaster in here, so thought I'd mention these. Good on their own for defense and value, and also combo with Dualcaster and something like Venser or Gary for a win.
How hard is Top to kill in EDH? Now make it part of your commander. Yeah, thats sick.
I dont usually like top because it slows things down, esp with newer players or those who need to explore every option at every interaction. In this deck as a cage target is awesome. Kinda obvious but great idea I totally looked over because of my bias.
Simple swap then Sensei's Divining Top <---- Mimic Vat
Yeah, I also didn't really consider adding Top to my deck, but might add it now...
Okay, so I have had a few more games with my deck and yeah I know not the same strategy or list as yours is, but figured I would give my 2cents... ^^
I have found many times that overall creatures that did Tap: destroy target (creature/land, etc) where not that great, they didnt add much towards the purpose of winning.. so I cut them down to only 1 - Avatar of Woe, reason why, cause it destroys and won't let them regenerate (which actually seemed to matter more than once so far) and it's good on it's own and has potential to be cast for only BB..
A lot of other cards also seemed pretty dead or not great for me at least.. Pack Rat and others like that, they where not needed at all for me so far... (I cut all of those) Kept 2 clones though... cause they give options outside of targeting Mairsil.. Only ones I still have are Sakashima, cause it makes you able to have 2 Mairsil at the same time... (and sometimes the bounce can be an option, though rarely.. xD) other is the 2 mana Illusion, cause its only 2 mana... ^^
Also another note with the 2 clones and Havengul Lich you make a difficult choice on an opponent for the Intuition, which in essence gives you all 3 of them no matter how they do it..
If they give Lich, you can reanimate the others with it's ability... if they give a clone, make a clone of Mairsil, exile Lich, reanimate the 3rd... ^^
I have been cutting more and more creatures and such out of my list for more draw and answers, to keep alive in games that we don't draw optimal and give more chance to draw what we need/want... ^^
Have not had much time testing a few of the cards so I can't give in-depth on everything as of now, but I won last 2 games I played with my list in four player games...
Tried it in a 1v1, but made a few mistakes losing to Krenko aggro goblins... Though without the mistakes I might still have won.. (which is not expected I guess... XD)
On another note, I didn't find giving haste was a priority a lot of times, taking a turn to get your stuff going overall never kept me from winning or going off when I had the right cards... (Tree of perdition was the all star in making me win both games btw, alongside Aetherling.. :P)
Never pulled the Combo enabling cards for infinites nor a Jodah's Avenger.. (might cut the latter at some point)
I like Aetherling but didn't find a need for multiple/repeatable cages.(different deck ideas) I have to agree with you about the haste, I'm finding my deck does not require it much, I have Boots, Leyline, Orrery and Anger. I finally found a Mirage Mirror, so im testing that out, I cannot remember what I swapped with it but will get some games in tomorrow with a more casual crowd to see how things work out.
Oh right yeah Mirage Mirror is a pretty good card in general, I think in Mairsil it could defo be a fun thing to make Mairsil change for instance in a land when they try to destroy it (as example)... most funny referrance would be if he changed into a Maze of Ith... If you get where I'm going with that... ^^
Also about Aetherling, indeed depends on your build, overall I tend to need like 2 or 3 caged cards to get the best out of Mairsil, Tree of Perdition + Aetherling is pretty much enough to get going.. but having an untap or something on it helps make it a bit faster as example... ^^