Black grabs you lifegain, plus reanimates from your opponent's exile turn after turn, green gets a powerful one as a +1/+1 counter doubler, red goes hard on haste and spawns tokens of your best creature, blue cranks up the mill power, and white does double the lifegain plus evasion and lifelink to put games out of reach
Sets that primarily take place there : Ravnica , Guildpact , Dissension , Return to Ravnica , Gatecrash , Dragon's Maze , Guilds of Ravnica , Ravnica Allegiance , and War of the Spark Planeswalker natives (with planeswalker cards) : Domri, Ral, and Vraska I hope by now you all know the plane of Ravnica
For one mana, Young Wolf offers extremely efficient aggression
However, any mill deck would love this