Merge Boost

The Merge Boost (MB) can be unlocked at a x450 Stars Tree Upgrade and gives huge boosts.

For every 100k Total Merges you've done since the very beginning of the game, this upgrade gives you 1% more magnets from all sources, similar to the v3. The boost given from this is $$(1.01)^{\lfloor\frac{Merges}{100,000}\rfloor}$$.

This is considered one of the most helpful upgrade for being the only magnet boost in the whole game that works multiplicatively instead of the usual additive boost. For example: With 10M total merges, the boost is $$(1.01)^{100}\approx2.705$$ instead of just 2 with additive boost, and by 23.2M merges the boost is already higher than 10x.

Areas which are affected by this gain
All magnet productions get benefits from this Upgrade, just like Scrapyard v3. This includes:
 * Magnets from storms
 * Magnets from Level Ups
 * Magnets from Team Leagues
 * Magnets from Converting
 * ...and many more

Trivia

 * The Merge Boost was suggested by Brickman, who had the most stars and total merges as of August 2020. The exact suggestion was: "Get 5% overall magnet boost per completed million total merges (multiplicative)". This upgrade was therefore first introduced as "Million Merge Boost" in Update 7.4 . Since Update 8.4 it is buffed to have the current description, Making it 10x as fine and around 2x as fast than before.
 * You can get a 10x boost for magnets roughly every 23.14M merges.