Since there are 13 cards in a suit, it perfectly matches the number of lunar cycles, while if you counted only the face cards, youd come to a total of 12, one for each month of the calendar
I've done horrible things to tables with cards like Duskmantle Guildmage and Mindcrank, and in Black I could run all of the best tutors and counterspells, but I decided to resist the urge to play combo
The Naya (white/red/green) deck, Call for Backup cares about +1/+1 counters, and also shows off the new backup keyword from March of the Machine
In the land of giants, fairies and porridge-stealing little girls, Eldraine gave us lovely storybook frames that surround familiar characters from our childhood
The benefit to this approach is that there are many options to cheat expensive spells into play with cards like Myr Enforcer and Sojourner's Companion
Pair Saisu with her Emboldened Warrior card, and you have a good 1-2 punch in your deck