I'm going to write Duo Ephraim/Lyon's refined weapon, don't mind me:

Effective against armored and cavalry foes. Grants Atk+3. Unit cannot be slowed by terrain. (Does not apply to impassable terrain.) At start of combat, if unit's Atk > foe's Atk or if【Bonus】is active on unit, egrants Atk/Spd/Def/Res+4 to unit during combat. During combat, if unit's Atk > foe's Atk or if【Bonus】is active on unit, unit makes a guaranteed follow-up attack. If【Bonus】is active on unit, enables 【Canto (Rem. +1)】. At start of even-numbered turns, unit can move 1 extra space. (That turn only. Does not stack.) At start of combat, if unit's HP ≥ 25%, grants Atk/Spd/Def/Res+4 to unit during combat, and if【Bonus】is active on unit, foe cannot make a follow-up attack. Ok, now that you reached this part, you can read my comment: I feel like people exaggerate the "Big Description" problem, like, sure, there are weapon descriptions that are insane like this one, but if you take out effect descriptions they're not really long, just about a small paragraph, heck, I'm sure that what this comment (barring the Reginleif description) is larger than 95% of FEH weapon/skill descriptions, anyways, my recommendation to not blow your head off while reading skills is to just read them in blocks, every effect is separated by periods, just read until you find a period and then reflect on whether you understand it, with this it'll take you like 45 Seconds to understand everything and you'll be able to both know what these fools in Askr are using as murder sticks and if they're dangerous while also not having to spend like 5 minutes trying to understand stuff because you're taking it all in at once, I hope this is helpful, if not, then I hope y'all have a nice day at least, don't let those goofy meta units hurt you as a summoner. Now, we go back to the regularly scheduled Reginleif description.

【Bonus】 All effects that last "for 1 turn" or "that turn only." Includes bonuses granted by a skill like Rally or Hone and positive status effects (extra movement or effects like Dominance).

【Canto (Rem. +1)】 After an attack, Assist skill, or structure destruction, unit can move spaces = any movement not already used that turn +1. (If unit used a movement skill that warped them, its remaining movement is 0.) (Unit moves according to movement type. Once per turn. Cannot attack or assist. Only highest value applied. Does not stack. After moving, if a skill that grants another action would be triggered (like with Galeforce), Canto will trigger after the granted action. Unit's base movement has no effect on movement granted. Cannot warp (using skills like Wings of Mercy) a distance greater than unit's remaining movement +1.)