There's "descend," "descend X," and "fathomless descend." Descend as an event is fairly simple
Casting Cost: Card Type: Creature - Plant Druid Power / Toughness: 2 / 3 Card Text: Reach Lands you control and land cards you own that aren't on the battlefield are Deserts in addition to their other types
He'll also light your forge, eat your slag, and gently nuzzle your cheek at the end of a long day
The capability to 1HKO Shaymin EX
The Swarmlord is every Timmy's dream, a 5/5 that enters play with more +1/+1 counters on it for each time you've cast it, and draws you cards each time a creature you control with counters on it dies
And then the Evacuation is a powerful instant that only bounces dorks, but does so at instant speed, which is pretty good for the masses