While it can still deal damage the same way its purely Goblin counterpart can, it can also ramp out even bigger Eldrazi thanks to the tokens it produces, 0/1 Eldrazi Spawn that can be sacrificed to produce a colorless mana
Poor scaling as opponents develop boards and can choose to sac off a weak thing and restrictions on your own build in that you don't want to put yourself in a position to sac off a relevant thing of your own
Toxic doesn't change the amount of combat damage a creature deals
Since these lands are satisfied by either type of land they provide colors for, they fit perfectly into dual-colored decks
Of course, Im certainly no pro, and I generally dont play the Modern format that this set is largely designed around, so I cant speak to the exact power level of the individual cards here without inevitably making a fool of myself
Leshracs Rite was also reprinted in Fifth Edition, Classic Sixth Edition, and Seventh Edition, but Stuffy only appears on the Ice Age artwork