The just hang out on the battlefield (and provide an ability or offer a permanent effect)
it just has to have the convoke keyword on it to activate Kasla's ability
It enters with X charge counters, and the creature it equips gets +1/+1 for each one
The crossover between two major franchises in Magic: The Gathering and Final Fantasy , however small, will also help bring new eyeballs onto Wizard's product, and the result should be an influx of interested consumers and, we hope, the door being open for further artist collaborations on alternate art cards in the future

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Its worth noting that if you do choose to bring this Dark-type pair, you should also bring along at least one Koga Supporter Card , if not two