An ongoing supply of hard to handle threats win games
Goro-Goro, Disciple of Ryusei Goro-Goro, Disciple of Ryusei is a bomb way to take advantage of your creatures with modifications: That is, equipment, auras, or counters
Koth Koth, a vulshok Planeswalker from Mirrodin, uses geomancy to split stone and shape metal in his fight for Mirran peace
If you have reason to change only specific Creatures, however, this could be a powerful effect
When playing against Thoughtseize decks this is one of the cards you most want to see because it helps you control the board while providing you the card advantage to bridge to the late game
Butnot this guy, hes just some dude covered in Christmas decorations