Slifers variable attack power, Obelisks monster destruction and Ras self-inflicted Life Point damage to destroy monsters were retained in new effects designed within the power constraints of the actual game
The Flood of Mars The Flood of Mars is a 3/3 with islandwalk that attacks and turns creatures into a copy of itself, or lands into an island in addition to their other types
As a stand-alone card, its mediocre
As such, WotC is currently monitoring the situation, but has decided that no action is needed against the powerful two-drop at this time
The recently previewed Prismatic Vista, as a generic untapped basic land fetcher, will play a big role as a way to hit eight fixers that produce a snow land
It's an indestructible enchantment which is very difficult to kill, it hits all enemies equally, and it's super easy to build around