You want to always flip Terra into Esper Terra, which is the main reason to use Terra as a commander
Costing only one white mana for a 1/1 artifact creature human soldier, its ability triggers whenever another player casts their first noncreature spell each turn
Dwarf Fortress: Create New World 1x Secret Rendezvous ($0.35) 1x Rune-Scarred Demon ($0.57) 1x Terror of the Peaks ($28.10) 1x Communal Brewing ($0.47) 1x Rogue's Passage ($0.98) There are a couple of fun little group hug type cards in here, namely Secret Rendezvous and Communal Brewing, which can make things pretty interesting for Commander matches with multiple opponents
The important thing is to have a good time
Tokens, pumping creatures, and dealing damage
If youd rather keep things simple, you can also narrow the deck down to one or two archetypes and play them consistently rather than juggle multiple lines