I really like it. I like the mutant ability, i like how creatures contribute in forming the Amalgamation | Patchwork mutant.
I think that it's a little expensive, though.
I'll make a table. I like tables!
creatures in hand | Amalgamation min | Amalgamation avg | Amalgamation max | Patchwork min | Patchwork avg | Patchwork max |
1 | 0|0 | 1|1 | 2|2 | 1|1 | 2|2 | 3|3 |
2 | 0|0 | 2|2 | 4|4 | 2|2 | 4|4 | 6|6 |
3 | 0|0 | 3|3 | 6|6 | 3|3 | 6|6 | 9|9 |
4 | 0|0 | 4|4 | 8|8 | 4|4 | 8|8 | 12|12 |
5 | 0|0 | 5|5 | 10|10 | 5|5 | 10|10 | 15|15 |
6 | 0|0 | 6|6 | 12|12 | 6|6 | 12|12 | 18|18 |
7 | 0|0 | 7|7 | 14|14 | 7|7 | 14|14 | 21|21 |
On average, i think players will use this with 3/4 creatures.
Paying 6
for a 4|4 (unupped) or a 8|8 upped seems ok, but i think, considering that you are losing 4 cards + this one, that the cost should be lowered a bit.
I think 5 or 4
should be fine.
Sidenote: wonderful counter to nightmare!!!
Question: the ability can be of any element, like mutants'?
EDIT: Ninja'd by OldTrees!