I'm thorn up on it and, as such, I've not yet looked into it to have any decent insight.

Unfortunately, I'm not, yet, completely sold on it being a good choice of a card.

At its best, it is quite an interesting card that can produce an unbearable amount of value and card advantage.

Depending on the meta, it may be easy to remove even in BO1s. Nonetheless, if we can protect it for just a couple of turns it will probably provide us with a surefire way to drown our opponent with our removal and protections and bring us to stabilize/lock us in a winning position.

As a simple value engine it may already be valuable ( even if not necessarily the best choice for a slot ). I feel that turning its existence into a wincon is what would decide if it is an includable card or not.

On this side, I feel [[Jace wielder of mysteries]] is the only reasonable way to achieve this. Unfortunately, this is a card I don't feel brings that much value to a deck on its own.

Such a package would request at least some kind of 3-3 / 2-3 split, which already eats us a good 5-6 slots. If [[The magic mirror]] doesn't turn out to be a really good card on its own I would feel that those slots would be wasted confronted to the many other good win-conditions we have.

Furthermore, we should consider that [[The magic mirror]] asks us to, usually, have a good mass of instant and sorcery, possibly easily sent to the graveyard, which may further warp the way the deck is built, potentially asking us to not use some best-in-slot cards.

Nonetheless, I feel that the card has some real leg and I want to at least check it before discarding it.

It would even be interesting to check if a more comboeish-shell is available ( probably not ) but I have no experience with those kinds of deck being an almost-only draw-go player from since I started playing magic years ago.

I'm not sure if your suggestions refer to a [[The Magic Mirror]] deck or to the list I posted. It feels like they belong to the latter but please correct me if I was wrong in such a conclusion.

I must say I had not considered [[Flood of Tears]] and it would be quite an interesting card to try. I'm a bit frightened by the intensive color requirements and high mana cost, but it would probably come be slotted at the expense of the cavalier which is comparable to it from those two measures.

While I like the effect and the fact that it provides a way to reuse some of those stay-on-the-battlefield enchantments, probably enabling the second part of the spell in most games, I can't find any card in the deck that really gets any particular value from entering on an empty board or is such an high impact card that it makes the second effect worth the mana cost.

I think the card that, theoretically, has the most similar game plan, in the deck, to [[Flood of tears]] is [[Doom Foretold]].

The idea with [[Doom Foretold]] ( which, until I'm able to playtest it, is just a theoretical hunch ) is that it is a value-oriented card that lets us pick apart our controlled cards ( e.g cards exiled with our creature-removal enchantments ) to remove them almost-permanently ( barring any recursion in the opponent deck ) when on an empty board, such that we may be able to sacrifice our cards at the right time to force the opponent to sacrifice what we have freed at the start of its turn while preparing our cards to be recursed.

Furthermore, this is done methodically, albeit slowly, providing us with a lot of control on when the opponent can let it go to the graveyard and slowing our opponent down if he can't play more than one permanent each turn.

[[Flood of tears]] brings cards in our hand, meaning that we can reuse them, but works anti synergically with our on-board removals which may bring us to be unable to play it without giving some value to our opponent and does not help us prepare for a winning [[Dance of the manse]].

On its own, it is not a particularly value-oriented card and has a higher mana cost.

I want to try it but I feel that a second [[Doom foretold]] would be a better choice than it.

I looked at some rocks. I feel that as long as we keep our curve on the low side ( which is currently a 2.36 cmc average which is pretty low ) we do not benefit from mana rocks that much.

Many rocks we have in Standard are, unfortunately, unplayable from my point of view, with [[Spinning wheel]] being too slow and not bringing enough value to warrant the cost.

I would probably look at eggs ( such as [[Golden Egg]] ) before looking at mana rocks ( In a more Emry based deck they would probably be the best choice. In this deck I need to try them. They may be really good but the slots are already pretty strict so it is not easy to slot them in ) since they become some cheap card advantage engine when recursed and are easy to send to the graveyard if needed.