Even though I consider Thought Monitor to be a better card than Thoughtcast, youll often see both of these cards together in the same deck
If you're really behind on lands, or if your opponents are in green and ramping faster than you, it's a great way to catch up and get multiple lands onto the battlefield
You'll always use the greatest number possible
Also, once again, in 1v1 gameplay, you yourself will be one of the 2 players, meaning your equipment, controlled and owned by you, will fall off the creature because it can't be targeted or equipped by your stuff as soon as it has protection from you, making it quite the useless sword
Niv-Mizzet, Supreme Niv-Mizzet, Supreme lets you build a jump-start theme deck using multi-colored instants and sorceries