Quote from DiscardUnearth »Indighost, netn10 (awesome card and flavor)
Creature - Shapeshifter (R)
You may have Automimic enter the battlefield as a copy of any creature on the battlefield with converted mana cost 3 or less.
Quote from bravelion83 »Votes: void_nothing, Indighost (I'm convinced that your card should be rare in any set, regardless of whether the set is Standard-legal or supplemental, and that it should indeed cost more mana, but I just love the idea and the flavor)
Terrain Shift 2G
Search your library for a land card, put it onto the battlefield tapped, then shuffle your library. If Terrain Shift was kicked, destroy target land an opponent controls.
Winds and water erode mountains, and with their fragments create new lands downstream.
Quote from netn10 »Votes: DiscardUnearth, bravelion83
Goblin Firecracker 1R
Creature - Goblin Artificer (Uncommon)
T: Add CCC. Spend this mana only to cast artifact spells or activate abilities of artifacts. At the end of turn, sacrifice that artifact.
Quote from kwanyeegor »indighost netn10
Arc Edge 3R
Target creature gets +1/+0 and gains first strike until end of turn
Arc Edge deals 1 damage to up to one target player, 1 damage to up to one target creature, and 1 damage to up to one target planeswalker
Quote from void_nothing »Votes: bravelion83, DiscardUnearth
Harrying Dive 1R
Target creature with flying gets +X/+0 and gains trample until end of turn, where X is its power.
Flyingcycling 4 (4, Discard this card: Search your library for a card with flying, reveal it, and put it into your hand, then shuffle your library.)