You can sacrifice a land to generate 2 red mana, which is an interesting ramp ability, and each time you do that, or when you sacrifice another nontoken permanent, you exile the top card of your library, which you can play later
On top of that, you can pay five mana to double the number of +1/+1 counters on each creature you control
Prior to the release of Bloomburrow, it was a staple in the Modern Amulet Combo deck, however, demand for Cultivator Colossus has been inconsistent
It's a very frustrating card for some players, and gives any deck effective card draw and protecting in one package
Creatures you control won't gain vigilance and trample
Schemes can be sorceries or enchantments with a wide range of effects