Potion of Growth

The red beads in this potion continuously expand and
contract from a tiny to large. Shaking the bottle fails
to interrupt this process.
For 1 hour, the target size doubles in all
dimensions, and its weight is multiplied by eight.
Until the spell ends, the target also has advantage
on Strength checks and Strength saving throws.
The weapons held also grow to match its new
size and deal double damage. Speed is doubled.