Tinkered Reach

Onlookers hear you mutter in arcane whispers while they see you gesture as if blowing a soap bubble through your rounded finger and thumb.  In the nearby melee, your friends are granted the boon of weapons that imposingly stretch to up to twice their original length.

After spending a short rest tinkering with the melee weapons belonging to your party, you may spend an action in combat to cast a 15' bubble within range.  The bubble is imperceptible, but for the instantaneous sensation of a slight static charge felt by all those within its sphere.  Within the sphere, up to 2 party members of your choice whose weapons had been examined in this way have their weapons instantaneously grow to gain an additional 5' reach for 1 minute.

Weapons modified in this way retain all their previous weapon properties and magical properties.  The weapons' wielders retain their proficiency with the weapons' new forms as if they'd not been altered.  Natural weapons granted by a character's race are ignored by this spell.  The weapons shrink to their original lengths when the caster's concentration is broken or after 1 minute.

For every spell slot above 2nd you use to cast this spell, you may choose up to 2 additional party members in the bubble to effect.