Darksteel ther Snap Wand of the Elements Wirefly Hive ther Snap was the first card to specifically destroy all tokens, using mass-bounce effects to accomplish that task
To make things more confusing, some cards in certain Commander sets could only be found in the (non-draftable) boosters for the main set, and not in the accompanying precons
If we use this as our benchmark, it would actually imply that a single soldier for three mana is a decent rate: Mobilization is a relatively efficient repeatable source of 1/1s when compared to recently printed cards like Westvale Abbey, Dawn of Hope, and Ironroot Warlord
From here, users can either Upscale or create Variations
You may put a creature card exiled this way onto the battlefield
We wanted a colorless acorn commander, and the card had proven to be a lot of fun in play, so we chose to make it a legendary creature