They have no link and aren't part of a particular skill tree, they're just some random skills.

If you are against any suggestion, just copy comment below with your reasons :P

Steal Cheese
Just like the vanilla map where the shaman steals the cheese. When summoned, the shaman gets a cheese and mice can touch the shaman to get cheese. Limited to only 5mice before shaman dies when the 6th mice touches the sham.

Bush Mice
When used on a mice, the mice becomes a bush (like #prophunt)

Shaman Soul
When the Shaman use it on one mice, the mice chosen will have shaman skills and will be able to summon stuff.

Break up
Using this skill will break the bonds between paired mice in soulmate maps

Strip Naked
Makes choosen mice remove their outfits on

Night Mode
Makes a mice go night mode

Invert Translucence
Solid planks becomes invincible planks, invincible planks become solid planks

Unburstable baloons
Baloons will never burst into spirits

Bootcampify
For 5/7/9/12/15 seconds, mice will keep reviving even when they die

Slippery Grounds
All grounds reduces friction by 0.5

Let it snow
Snow lasts for different timing [level/5]

Troll mice
When used on a mice, the mice would not be able to enter hole or take cheese

Fall Asleep
When Facepalm, [level/5] of mice will sleep

Simon (says) Jump
Everytime shaman jumps, mice automatically jumps too

Vampirefy
Makes a mice a vampire

Heavy Planks
Planks mass are heavier

Fixed Rotation Plank
Plank will have fixed rotation

Shaman Clone
Gives selected mice the same clothing as the shaman

Conjuring
Allows shaman to draw conjuring that last very short (5sec before it disappears)

Permanent Arrows
Arrows remain on screen to lead mice

/nosupport on
Invert Translucence
Solid planks becomes invincible planks, invincible planks become solid planks
We already have a skill like this in the Mechanic Tree

Some of these suggested skills are similar to existing ones. Others are just too OP. Maybe the only things I would approve are the Let It Snow, Fall Asleep, and Vampirefy maybe.

Support: Unburstable baloons, Permanent Arrows, Simon (says) Jump , Break up