Jab!
Post moar!
Also, don't post anything that is off topic, please? No matchup discussions..
My bad.
Also, I haven't written a writeup for bullet seed and I feel like I should, even though your writeup is pretty perfect. So don't feel like you need to put up mine but for my own benefit I'm just gonna throw this out there.
AHEM.
Bullet seed is one of the few attacks that can in a single attack, win or lose a game. If you use it at the right time, you can rack up anywhere from 25-60 damage. 60 DAMAGE. That's a lot! However, at the same time if you use it at the wrong time, it could cost you your stock because it's so easily punishable, so be wary!
When b is pressed, Ivysaur pops up opponents nearby into a stream of seeds coming from its bulb. This move comes out incredibly quickly (a single frame) and can catch people during even minute cooldown lag. However, if the opponent sees it coming, SDI can cause the seed stream to miss completely, often leaving ivysaur open to attack in his large cooldown lag, so don't overuse it!
This can be landed a few ways, though it is more limited than most of ivysaur's moves. The first is to punish a lunging attack OOS. Wolf's fsmash is a prime example but there are many others. Also, it's excellent for use on an opponent above you, either on a platform or just stupidly approaching from directly above. Inversely, drop through platforms to hit people beneath you in midair! Good god this does blind man in a house full of spike pits type damage, not to mention the aerial popup isn't as great so its nearly impossible to SDI out of. Also, dash -> bullet seed is a bold way to land it; if you expect a shield or a dodge, just run right into the middle of them and put up bullet seed. SH bullet seed can also catch people by surprise in about the same way.
There are a few ways to land this from other moves as well, namely nair -> BS, bair -> BS, and low % dthrow -> SH'ed BS.
It can also be used as a defense against combos (combos?) but this is a last resort most times. It can get you out of some sticky situations such as poorly done chaingrabs and some jab combos, but I recommend to use it sparingly.
Bullet seed does mad damage and fluster the opponent, but it can lose you the game if used poorly. Be smart.
Purposes of bullet seed:
Damage racking like a mo-****a
Punishing OOS
Punishing in general
Breaking out of hit chains
Ways to land this attack:
Out of shield
After a laggy attack
Dash/nair/bair/dthrow + sh - > BS
While dropping through a platform onto an opponent
Countering a vertical attack
SH into opponent -> BS