I noticed that myself when I switched in an extra land, sometimes one card just messes up the Feng Shui of the deck
Untap, Upkeep, Draw
Give Emissary Shadow; Attack with Trooper, Emissary and Chronozoa, responses?
boogiepop: 6
Hand: 3
Library: 27
Battlefield:
(U,U,U) Forest x3
(U,U,U,U) Mountain x4
(U) Rootwalla (2/2, 1G: Rootwalla gets +2/+2 until end of turn. Activate this ability only once each turn.)
(U) Mogg Cannon (Tap: Target creature you control gets +1/+0 and gains flying until end of turn. Destroy that creature at the beginning of the next end step.)
Graveyard: Uktabi Drake
Exile:
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Melkor: 12
Hand: 4
Library: 26
Battlefield:
(T) (U) Plains x2
(T) (T) (T) Island x3
(T) Soltari Trooper (1/1, Shadow, whenever ~ attacks it gains +1/+1 until end of turn)
(U) Soltari Emissary (2/1, W: ~ gains shadow until end of turn)
(T) Chronozoa (3/3, Vanishing 3, When ~ dies, if it had no time counters on it, put two tokens that are copies of it onto the battlefield.) 2 counters
Graveyard: Sage Owl, Blade of the Sixth Pride
Exile: