I don't like cards that have pros and cons. Do you really wanna give a malignant cell effect to an oponent creature?
I like cards with pros and cons. The real question is, "Is this card balanced correctly?"
If we assume that the new copies do not have infest, and this card has a 1
![Underworld :underworld](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/underworld18x18.png)
upkeep, you basically have a 2 card + 5
![Death :death](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/death18x18.png)
combo for free TUs per turn.