Being able to throw an Elvish Piper into play and use it twice the turn we play it is spicy, especially if those free creatures can immediately attack, or use their own tap abilities
7 Wrenn And Six (Textured Foil) - $149.18 There are only two planeswalkers printed at two mana in Magic
Also, exiling half a players library is very strong since the cards never touch the graveyard, but at the same time there are diminishing returns in doing that each time you recast Ulamog, and are you really building in a milling alternate win con
To do this creatures have a power and a toughness that is shown in the bottom right hand corner of the card
By evoking a high-cost Elemental early and keeping it on the board with protection spells, you can cast Sunderflock as early as turn three for just a couple of mana
But hey, that's a fun way to lose