Magic Find

is one of the core player statistics. It is a Stat that affects the drop chance of obtaining rare drops from monsters and bosses.

Mechanics
is the bonus chance to find rare drops from enemies.

Each point of increases the chance of a rare item dropping from a mob by 1%. For example, with 100, an item with a 1% chance of dropping would have its drop chance increased to 2%.

When a rare item is dropped, the amount of the player currently has is displayed at the end of the drop message. This does not increase.

does not affect drops with a higher drop chance than 5%. Consequently, having high can decrease the drop chance of  drops from Slayer bosses.

Increasing Base Magic Find
Players have 0 base. The base can be increased by collecting unique pets.

Maximum
There is no highest maximum, due to the Golden Dragon Pet's Shining Scales perk not having a hard cap. Without this perk the maximum currently obtainable is 378%.This is obtained by:
 * Accessories: 33 accessories in total can be enriched + the Crab Hat of Celebration giving 1 magic find (0.5*33+1=17.5)
 * Temporary Effects: Magic Find IV Potion, Booster Cookie, Jerry Candy, level 100 Rat pet's blessing, Century Cake, Slayer Energy Drink, Beacon (75+15+3+7+1+10+5=116)
 * Base Magic Find: Maxed Pet Score bonus and Magic Find Account Upgrade (7+7=14)
 * Pet: Golden Dragon with 19 digit of collection (highest collection is 64integer which has 19 digits) Minos Relic pet item, Daedalus Axe with ((20+2*19)*3+ 1 third=58*4=232)
 * Armor: Full Superior Dragon Armor with legion 5 and renowned reforge, with 20 people around (5%+28%+4%-+37%)
 * Mayor Mayor Jerry is elected with Aatrox as secondary Mayor (+30%)

Combining all that results in 633.765 (assuming all the percetage bonuses are Cumulative with eachother), note that it will only show 557 in stat breakdown due to the fact that Aatrox's perk does increase the magic find only in calculation

on top of that players can choose to max out a bestiary of a mob and proceed to get 189 for that particular mob, which assuming that number is also increased by the Percentage bonuses would result in 835.695 instead, effectively Noncupling the drop chances of items

History
魔法发现