Sometimes, a subject's popularity is more important for a card's value than anything else
Here, Ill only describe what in my opinion works best, leaving out the multitude of less successful trials
It can grow big depending on the number of creatures you control and creatures that ETB
Thinking about it for an hour produced a decision (partly based on previous impressions, and partly solidifying and crystallizing those impressions) of green/blue, and I was off
Perhaps stocks of Counter Intelligence are running out, and new buyers are having to compete for copies of this card - it's now the most expensive MTG card from the whole of Edge of Eternities Commander
However, as per WotC's comments in the Banned and Restricted post, the need to ban Up the Beanstalk also comes from current and potential future design issues with other cards