Because the ability to buy individual cards is so helpful, you should only ever spend these when building a specific deck
Wrap Up Iona, Shield of Emeria | Illustration by Jason Chan The Commander ban list is quite large, although not that large when you consider the size of the card pool, and it has some very powerful or unfun cards that dip into every section of the color wheel

Connect" ALIN-EN055 (SR) "World of Spirits" ALIN-EN056 (SR) "Flash of Heraldry" ALIN-EN057 (C) "Filia Diabell" ALIN-EN058 (UR) "Witches of the White Forest" ALIN-EN059 (ScR) "Regenesis" ALIN-EN060 (SR) "Regenesis Code" ALIN-EN061 (C) "Here There Be Dragons" ALIN-EN062 (SR) "Argostars - Giantslaying" ALIN-EN063 (C) "Materiactor Meltthrough" ALIN-EN064 (SR) "Maliss in the Mirror" ALIN-EN065 (C) "Wight Reanimator" ALIN-EN066 (ScR) "Gordian Slicer" ALIN-EN067 (C) "Chaotic Elements" ALIN-EN068 (C) "Let's Go Together" ALIN-EN069 (C) "Seven Stars Slash - Army Annihilator Hagun" ALIN-EN070 (C) "SA.I.dekick" ALIN-EN071 (C) "Eternal Sunshine" ALIN-EN072 (C) "Curse of Diabell" ALIN-EN073 (C) "Sinful Spoils Sanctification" ALIN-EN074 (C) "Regenesis Birth" ALIN-EN075 (C) "Ryzeal Mass Driver" ALIN-EN076 (C) "Ryu-Ge End" ALIN-EN077 (SR) "Eldlixir of the Glorious Golden Land" ALIN-EN078 (ScR) "Songs of the Dominators" ALIN-EN079 (C) "Dragon's Mind" ALIN-EN080 (SR) "Abduction" ALIN-EN081 (C) "Dawn Angel Kambi" ALIN-EN082 (C) "Hrimnir the Divine Follower" ALIN-EN083 (C) "Vingolf's Blessing" ALIN-EN084 (C) "Aspischool" ALIN-EN085 (SR) "Toxic Boxfish" ALIN-EN086 (C) "Fish and Bids" ALIN-EN087 (SR) "Replicard LAD" ALIN-EN088 (SR) "Sakra Vendirage" ALIN-EN089 (C) "Tiki Peace" ALIN-EN090 (SR) "Mitsurugi no Mikoto, Aramasa" ALIN-EN091 (C) "Mitsurugi no Miko, Wousu" ALIN-EN092 (SR) "Ame no Habakiri no Mitsurugi" ALIN-EN093 (C) "Mitsurugi Mirror" ALIN-EN094 (SR) "Mitsurugi Magatama" ALIN-EN095 (C) "Mitsurugi Sacred Boundary" ALIN-EN096 (C) "Mitsurugi Tempest" ALIN-EN097 (C) "Dipity" ALIN-EN098 (C) "Giant Kra-Corn" ALIN-EN099 (C) "Migratory Zereort" ALIN-EN100 (SR) "Dragolithia Kunzite"

If you can get your Galaxy-Eyes XYZ monsters on the field and keep them there, your opponent will have a very difficult time overcoming this powerful structure deck
Kurbis, Harvest Celebrant is a stranger choice that appears to synergies particularly well with Kyler
Transforming Kuja grants a damage-doubling effect, a Commander favorite