Opportunity Tango

There’s a new edition called D an' D 3E
That has a concept confusing me
Sometimes when combatants let their shields and guards down
They suffer attacks of opportunity
They suffer attacks of opportunity
You threaten a space of about five feet
Usually, that’s any direction
Weapons with reach are such a fine treat
Many hold their spear with affection
Cast a spell and you risk your neck
Unless you make your concentration check
Drink a potion, or read a scroll
And shoot far away from a grassy knoll
That new edition called D an' D 3E
Has another concept that mystifies me
Moving through spaces threatened by your enemies
Provokes attacks of opportunity
Provokes attacks of opportunity
To move, attack, and escape unhacked
Three feats you’d better consider:
Dodge, mobility, spring attack
Or brother, you’re gonna be bitter!
Another thing if you move and kill
Consider taking the tumble skill
When you’re fleeing it saves you woe
If you lack the HP to go toe to toe
That new edition called D an' D 3E
Has other rules perplexing me
Sometimes when combatants wanna try to be cute
These feats let them have the opportunity
To avoid attacks of opportunity
Disarm the swordsman, or punch like Bruce
Sunder, or bull rush or trip 'em
Grapple, or pin, or maybe seduce
It’s all in the way that you grip 'em
In that new edition of D an' D 3E
An A-O-O per round seems fair to me
I always travel with my own friends
Who get their own opportunities
To make attacks of opportunity
Get more advantage from A-O-Os
Take a feat called combat reflexes
Only one blow on each of your foes
How many? Depends what your dex is
Seems complicated, but we’re almost done
You may walk away, but you never want to run
Only pick things up when you’re safe from attack
You can draw your weapon, but don’t put it back
That new edition called D an' D 3E
Revised itself to bewilder me
But three point five keeps the A-O-Os alive
So you get your golden opportunity
To make attacks of opportunity