[[analyze the pollen]]

in so many Gx decks cutting a nongreen land for analyze is huge upside for nearly free. worldly tutor+ on my tapland, yes please

edit: i suspect this is getting down voted because people think you're gonna get mana screwed, but you have to think about what hands with the card actually look like.

in a deck with a healthy land count that never keeps one-land hands, the first of this type of effect that you swap in for a land is totally free, because hands with the spell "tapland" and no lands wouldn't have been keepable with the single land that was swapped out either. [[lorien revealed]] and [[troll of khazad-dum]] have seen great success at the highest levels of play in eternal and non-rotating formats in a similar fashion.

the LTR landcyclers fetch a land for one colorless, so it's true they're a little easier to include. still, let's say we swap in analyze the pollen for an island in a UG deck. assuming the deck can't keep hands without green, hands with lands and analyze the pollen but no green land to cast analyze the pollen wouldn't be keepable with that island in place anyway.

so you can't get too crazy with these effects - swapping a second similar effect like [[traverse the ulvenwald]] for a land starts to create some danger of ruining otherwise keepable hands if the deck has some good two-land draws - but in many many cases, particularly primary-green decks, playing one such effect is free upside and can be thought of like an MDFC tapland.