Despite the nerf in the last update, I found it quite surprising that nobody found the SoF not overpowered.
It's quite an all-in-one card with possible:
Permanent control (free). Of course, only up to three permanents per SoF.
But cards with similar effects generally cost at least 6 quarta:
- Explosion (2 per)
- Steal (3 per)
- Pulvy effect (2 per)
Damage control when used with gravity pull, with 15 health per turn (free). A targetable permanent is required, but the great majority of decks use pillars / pendulums.
Cards with similar effects generally cost at least 1 quarta per turn:
- Heavy armor (1 ) x 2
- Basilisk blood (1 ) but with 6 turn freeze
Quarta control. Via free PC and getting an additional black hole allows very good quarta control / denial. The black hole is indeed put into the owner's hand instead of getting casted automatically, but both 'drawing an additional card' and 'getting additional cards not included in deck' are both fairly expansive effects / cards by themselves.
It's quite common to add an SoF or two in a rainbow deck, or to use them in a gravity mono / duo (when I often just quit).
However, SoF has a great weakness that it starts with just 1 hp, making it prone to all kinds of CC (although it becomes quite indestructible after that first turn). Therefore, I don't think a cost increase makes sense. However, some other nerfs I thought of:
- Increased cost of ability, possibly of another element so as not to limit it to gravity mono decks.
- Card stats changed to 1|1, making it prone to additional CC (fireshield)
- Decreased hp gain per permanent destroyed AND/OR decreased maximum health before being destroyed.
- A shard 'pillar' or 'holder' that is a permanent that appears with each SoF, and the SoF is destroyed with no black hole created if the holder is destroyed.