No, you're missing my point. It can. I ran Zoo in Regionals last year on 21 lands, and had trouble in ONE game ONLY, and it was a COLORscrew, not even a manascrew. Thing is, I ran Flagstones of Trokair and Ravnica shocklands, in addition to Painlands, Horizon Canopy AND Gemstone Mines, in order to pull it off, and my deck curved out at 4, a set of Giant Solifuges (the ONLY 4-costing cards, including sideboard). But on this manabase, it's harder to run such a low land count, and since the format tends to be slower anyway, you can sacrifice a small bit of speed in order to habe a better middle game. I'd probably cut out Ajani, really not worth it, and even consider cutting Planeswalkers altogether, so you can run an even tighter curve. With this type of build, you'll also want/need some burn spells to force damage through and take out big blockers that may arrive, so I'd cut the 'walkers (perhaps relegate the to the sideboard) for a set of Magma Sprays, to kick things off. You could try to squeeze in blue (through fetchlands as well, merely a splash) to run that 3-mana 3/4 lifelink guy, and perhaps some 4-mana 4/4s to top it off, but I'd stick with the lifelink guy, tops, perhaps the 2/1 Shroud or the 2/2 unblockable guy. Lots of potential here, although it would bleed the Shard you want to play, so yeah, let's try working in-color first.