Although this is a very real cost, as confusing new players and making the game complex is never a good idea, I do think that players would come to understand how these cards would work (again, they would automatically go into the Active Spot) and, should this rule be implemented, future cards would be worded differently
Interaction Density by Bracket The right amount of interaction depends on your power level
It costs just three mana to animate, an affordable rate in the creature lands world, and it also gets around a major downside of creature lands: the creature being killed in combat, thus losing you the land
There was some disappointment with the mechanical execution on some of the animals
Based on the latest market prices tracked on TCG Stacked, a foil copy of Bigger on the Inside is worth about $16.21 USD
It was going to pay for everything