Notes & Combos
Memento is a very cool deck, but at the moment I dont think can compite with the other decks in the META, specially right now when most of the META decks are running +12 handtraps.
Your end board is "S:P Little Knight" + "Tecuhtlica" with "Cranium Burst" and/or "Mementotlan Fusion"/"Fracture Dance". (Chimera 1 or 2 pops, Fracture Dance 1 pop). Always try to end with "Agwitch" in your hand or GY. So you can special summon it in the opponent turn and search "Mace" for a (Quick) Change of heart.
The deck really struggles aganist Maxx "C", If you get Maxx "C", try to search "Fracture Dance" and/or "Mementotlan Fusion" in the less posible summons and pass, you really dont want to play the challenge.
The deck is bad goind second, the space is to tight to put board breakers. But I tried "Droplet" and works really well, even better if you can summon "Tecuhtlica" and go for an OTK.
About the ratios... Most games Im fine with only 1 "Tecuhtlica", aganist Kashtira is where I find you need another one. Speacking of Kashtira, since "Kashtira Unicorn" is quite popular in Snake-Eyes, I run 2 "S:P Little Knight". I think 2 Memento Fusions, 1 Chimera and 2 "S:P" are mandatory.
I didnt tried it and if I read it correctly, "Abominable Unchained Soul" and "Meklord Emperor Wisel" can trigger of your Memento cards, Its worth mention it, but I dont think is viable.
Replays
Shout outs to: Triple Tactics Tim
For the combo guide https://youtu.be/0xlGNaXzXio?si=tLBl2ACwwRjumjA9
ID:476-952-493
Aganist Snake-Eyes Goind Second
Note: In the replay, the oppenent miss-play in not bring it "Link Kuriboh" when he summons "Ash", "Oak" of the "Flaberge".