Quote from Schreckstoff »RG needs all the help it can gets in EDH, winter orb is a good call. Dunno about land destruction but ruination usually hurts lots of players significantly.
There's a couple utility lands OTOH we'd lose out on. Kessig Wolf Run is a must and probably arch of orazca as well
yeah but then you can drop kessig after you do the real damage to finish people off.
ruination and friends can set the table so far behind that they'll never catch up