The more ways you can play by adding mana on the battlefield, the more likely you are to play the large game-changing effects that Ulalek and the other Eldrazis can do to guarantee a win
For example, Sokka has three separate cards, with Tenacious Tactician having access to Jeskai (blue-red-white mana) coloured spells, where the previous two versions (where the story is concerned) only have access to two colours of mana
Im not talking about Siege Rhino, where the stats are just off the charts
II, III Double the number of each kind of counter on target creature you control
If they manage to deal with your 7/10 or you blink it, more lands will hit the bin
End Game When your opponent plays a Character with [Blocker] or other troublesome effects, it's time for "OP09-093 Marshall.D.Teach" to shine