That said, Shantotto's an uncommon from the main set , not a Commander card, so you'll be seeing this one in the Limited format

Sort Card Type Solgaleo #87Rare $0.48 Solgaleo #99Holo Rare $1.26 Solgaleo #142Holo Rare $1.40 Solgaleo #21Holo Rare $0.29 Solgaleo #16None $0.32 Solgaleo #55Rare $1.32 Solgaleo #69None $0.99 Solgaleo #39Common $0.98 Solgaleo - 87/145 (SM Guardians Rising) #87Holo Rare $0.70 Solgaleo - 87/145 (Water Web Holo) #87Holo Rare $7.03 Solgaleo (MIrror Holofoil) #16None $3.49 Solgaleo & Lunala GX #75Ultra Rare $40.83 Solgaleo & Lunala GX - 020/049 #20Double Rare $16.08 Solgaleo & Lunala GX - 063/049 #63Super Rare $280.27 Solgaleo & Lunala GX - 070/049 #70Hyper Rare $132.50 Solgaleo & Lunala GX (Full Art) #216Ultra Rare $307.82 Solgaleo & Lunala GX (Secret) #254Rainbow Rare $124.18 Solgaleo GX #89Ultra Rare $3.09 Solgaleo GX #249Ultra Rare $23.81 Solgaleo GX - 040/060 #40Double Rare $4.03 Solgaleo GX - 063/060 #63Super Rare Solgaleo GX - 069/060 #69Hyper Rare Solgaleo GX - 070/114 #70Double Rare $2.24 Solgaleo GX - 125/114 #125Ultra Rare Solgaleo GX - 2019 (Henry Brand) #SM104Promo $3.70 Solgaleo GX - 89/149 #89Promo $6.97 Solgaleo GX - SM104 #SM104Promo $17.82 Solgaleo GX - SM104 #SM104Promo $15.52 Solgaleo GX - SM104a #SM104APromo $12.25 Solgaleo GX - SM16 #SM16Promo $2.46 Solgaleo GX (Full Art) #143Ultra Rare $6.66 Solgaleo GX (Secret Rare) #173Secret Rare $53.50 Solgaleo GX (Secret) #155Secret Rare $16.68 Solgaleo Prism Star #89Prism Rare $3.64 Solgaleo Prism Star #82Prism Rare $3.46 Solgaleo Prism Star #43Prism Rare $3.45 Solgaleo & Lunala GX (Full Art) #216Ultra Rare $307.82 Solgaleo & Lunala GX - 063/049 #63Super Rare $280.27 Solgaleo & Lunala GX - 070/049 #70Hyper Rare $132.50 Solgaleo & Lunala GX (Secret) #254Rainbow Rare $124.18 Solgaleo GX (Secret Rare) #173Secret Rare $53.50 Solgaleo & Lunala GX #75Ultra Rare $40.83 Solgaleo GX #249Ultra Rare $23.81 Solgaleo GX - SM104 #SM104Promo $17.82 Solgaleo GX (Secret) #155Secret Rare $16.68

That's actually a rather impressive design step, and as much as we bitch about how each individual color's cards for interacting with the other colors suck, and how the cards designed to let them interact don't really play to each other's strengths, this is still huge
For example, Mount Olympus could power up Hercules characters
It that creature attacks, it untaps, and a second combat phase begins after the first
We have a lot of cards with this treatment, including 10 uncommons, 26 rares, and 14 mythics