Can I post some ideas here? Just very simple ones that might inspire you fellow card makers, I know nothing about balancing.
(All in unupped format, just ideas)
Crazed Architect 8
creature
6/6
2
: Reconstruct: turn target (non-pillar, non-weapon, non-shield) permanent into another permanent of its element (
permanents turn into random perm of any element)
Relic 1
permanent
(relic now comes in play as a perm with no ability)
Tectonic Fold 3
spell
Add 2 pillars/pends to the target stack
Phantom Clay 3
permanent
2
: Morph: Turn into the target permanent
Deactivate 2
spell
Sacrifice one of your permanents to gain 15hp and a random
card in your hand
Deconstruct 3
spell
Rewind a target permanent
Quantum Mortar 5
permanent
3
: Launch: Deals 5 (or any other balanced number) damage to your opponent
(just here so that more perms for control)
Obelisk 4
permanent
2 light: Sacred Offer: Sacrifice a permanent to deal spell damage to your opponent. Perms of better quality deals more damage.
Energy Infusion 1
spell
Target permanent can use its skill once more per turn
Decay 3
spell
Target permanent turns into a boneyard or soul catcher after 2 turns
Pandora's Box 4
permanent
1
: Open: Choose a non-pillar permanent. All other permanents have their skills replaced by a new random skill (if there is a cost, it costs its own element). Destroy after use.
Just my 2 cents. Pillar/non-pillar doesn't matter, they are just very rough, unrefined concepts.