If the question is quite tough, the first correct comment will win, otherwise I'll use a random number generator to choose a winner.
You can easily make a game winning amount of mana for your deck from this simple tap from fueling an X spell like Jaya's Immolating Inferno or Exsanguinate to dropping stuff like Eldrazi Titans and Blightsteel Colossus and then equipping with Greaves and winning
Sky bison know no boundaries by land or sea, for the sky above them is boundless
Hermetic Study/Psionic Gift ( Saga/Legacy/Destiny & Odyssey/Torment/Judgment ) In both sets, these cards served a similar purpose: kill small creatures or allow your smaller creatures to threaten large ones in combat (for instance, Hermetic Study would allow your 2/2 creature to attack into a 3/3 creature with the threat of your third Hermetic Studied creature sweeping away the 3/3 should it block)
The Rollercrusher Ride Duskmourn MR Legendary Enchantment Dealing double damage if Delirium is activated is cool but The Rollercrusher Ride is more of a board wipe spell
Originally released all the way back in 1995s Ice Age, Goblin Snowman isnt exactly good or popular, but you cant deny its festive appeal