Sheep shrink

Active consumable: Can be used during the level (one time use), at any giving time.
Consumables not used during a play session are kept for the next play session.

Sheep are shrunken to a smaller size, making it easier to navigate your flock through tight places. The sheep get no speed or eat time penalty, despite their size. You can upgrade the consumable. The upgrades are permanent.

Level 2-7 is italic because we will implement level 1 consumable (without the ability to upgrade) to begin with. If you upgrade your consumable after having purchased them, the upgrade effect is retroactive.

Consumable price: (the price may need to ramp over time (per consumable))
Amount 3-10 is in italic because we just need the ability to buy one at a time to begin with.