How about this: a card that creates any of: weak creature(photon, spark, etc), spell(thunderstorm, momentum, etc), or pillar/pendulum.
The element would probably be
![Entropy :entropy](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/entropy18x18.png)
or
![Light :light](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/light18x18.png)
.
Update:
Or a
![Time :time](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/time18x18.png)
card that adds +5|+5 one turn, +4|+4 the next, etc. Destroyed after +1|+1.
Cost something like 7
![Time :time](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/time18x18.png)
.
Could name it Time Resonance.