It's not a bad idea, it's just hard to read the balance and usefulness on it. It is soft PC.
There are currently only three ways to remove your own permanents: Pulverizer, Explosion, and Butterfly Effect. (I may be forgetting one.) Steal will not work. Malignant Cells can be Immolated, Lanced, Siphoned, Rewound, Devoured, Shockwaved, Sniped, Infected, Enraged, Gravity Forced, Gassed, Lightninged (funny, spellcheck didn't catch that!), Pandemonized...