Sediment Shield: Permanent (8 Earth quanta)
Blocks 2 damage from creature attacks. If you are attacked this turn, the shield loses 1 power, if you aren't attacked this turn, the shield gains 2 power. Permanent destruction deducts 3 power.
An upgrade could make it so that it has to be a successful attack to reduce the shield power.
Possible use: Along Sundials it would be a good card, since Earth/Time is a natural combo, so you could stall with Sundials up to theoretically 26 blockage, and destroy the enemy's weapon with a Pulverizer (Earth/Gravity, just one Gravity needed). Earth/Gravity absolute control or lockdown or whatever could also work.
Icicle Shield: Permanent (5 Water quanta)
Summons 5 Ice Columns which absorb damage from a single source. Summons 5 more Ice Columns every turn, up to a maximum of 5. The shield isn't destroyed on 0 charges, but is removed by permanent destruction wholesomely.
An upgrade removes the maximum cap, letting you stall or control the enemy creatures enough to grow the shield large.
Use: Blocks the first five attacks, every turn. After the upgrade it also builds up if the enemy is having less than 5 damage dealers, and can be used with a Sundial to get 4-5 more Columns every turn.
Diccusion!