Tracking rare enchant, Power crossbow, Trader block and Multi-level lever.

An idea of mine would be the "Tracking" or "Homing" enchant. Here's how it could work: It has 5 levels and is very rare, found only by enchanting a crossbow, a bow, or a book. Level I:Chooses the target nearest your crosshair and locks onto it. This part carries through all 5 stages. Makes the shot arrow turn 6° and 15' towards the selected target. Level II:Doubles the amount of degrees the projectile can turn. By left clicking towards your target, all projectiles shot will lock onto it untill a new target is chosen or the target dies. Level III:Doubles the amout of degrees the projectile can turn and fireworks now blow up the instant it collides with the target. Level VI:Doubles the turning radius. Level V:Immensly rare to get with 15 bookshelves and the projectile will turn up to 360°. The projectiles can also turn up or down and the enchant has effect only if the projectile was completely charged before shot. Power crossbow is self-explanatory. The Trader block is a creative gamemode block unobtainable in survival. It is indestructable and allows you to set the items it needs to trade and lets you choose whether it should give other items, send a redstone signal of different levels, use a command or give an effect. The multi-level lever is crafted with 2 or more levers and allows the user to flick it multiple times,giving more and more power to the redstone connected to it. The amount of maximum flicks depends on how many levers you crafted it with (Ex.:2L=2F,6L=6F,etc.).