Gambler's Blade

artifact

Grant 1% bonus Attack Speed per gold in your bank (up to 30 gold).

Each attack has a 6% chance to drop 1 gold.

Unique - only 1 per champion

Source

Attack Speed

Bonus Attack Speed makes a unit attack more often per second, which means more auto-attack damage and faster mana generation toward the next ability cast. Some carries scale beyond that — their ability itself fires more hits when they have more Attack Speed (e.g., the number of swipes in Aphelios's onslaught). Stacking AS items and traits on these units compounds: faster autos, faster casts, and bigger casts.
On Hit

Effect fires on each basic-attack hit — every auto procs items like Red Buff (burn/wound), Nashor's Tooth (mana on attack), and Kraken's Fury (stacking Attack Damage per attack, up to 15). On-hit carries scale with attack-speed buffs, so stacking AS multiplies their damage and utility per second.
Gold

The player-level economy resource — earned each round (base income + interest + win/loss streaks), spent on rerolling the shop, buying XP, and purchasing units. Augments grant flat gold, raise interest, or make kills drop gold; some items generate gold on takedown.