I think people have been working for a long time on different versions of stuff like this, but I'm really proud of what I've put together here. I started with the Fire Arrow as the most basic functionality. It's simple and easy to use and understand, but each arrow has unique features that make them valuable and decisive.

The Fire Arrow is basically simple, enemies in it's area of effect get caught on fire. The closer they are, the longer they burn; stacking damage accordingly. There's also a little bit of bonus damage done to whichever target you strike directly.

The Ice Arrow is pretty similar, albeit using a new status effect. Frozen Mobs can be climbed, and the Arrow itself will leave an Ice Block wherever it bursts. It can be used to build towers and bridges, and thereby gimp Outdoor Adventure Worlds. You can remove this feature, but it involves going into the"ice_arrow.mcfunction" file.

The Shock Arrow has three basic Ranges. It's Chain Lightning Effect has potentially Huge Range, if Enemies are spread out evenly. But Targets caught in the Initial Burst drop both Hand Items. Any Mob you hit directly is also blown out of their Boots and Helmet.

The Bomb Arrow is really easy to understand. It's just an Explosion. Direct hits also do massive bonus damage. Be careful where you shoot it, though. It is the only Magic Arrow that damages the Player, and the only one with Gravity.
You can use "/gamerule mobGriefing" to decide whether or not it actually breaks blocks, but remember that the explosion is slightly larger than a usual Creeper.

The Light Arrow instantly kills any target it hits, unless tagged "safe". It's power is absolute, and you're trusted to use it righteously. The bright flash also causes strong Area of Effect Damage indicated by the glowing effect. As a bonus, it can be used to light up dark areas, leaving behind a trail of glowing Particles.

Obviously, if you'd like to add this Datapack into an Adventure World (or anyplace else meant to be public) I only ask that you give proper credit.