At any multiplayer table, someone is rocking almost all non-basics, either intentionally with a light basic land mana base or accidentally, based on what they drew that game
Daniel Arsham x Pokmon, Field Research, 3110NZ by LDH kitchen, Tokyo, 2022 2022 Pokmon
Id only avoid this if I had a fairly low curve and just wanted to attack with cheap creatures, as its ultimately just another mana source if the game goes long enough
How often a deck changes is completely up to the player
The player who controls the triggered ability is the player who cycled the Sojourner, or the player who last controlled the Sojourner on the battlefield
#32 Darksteel Colossus - Bronze Age If you're going to do something, do it right