| 9/25/2020 |
You can activate Crawling Barrens's second ability even if it's already a creature. |
| 9/25/2020 |
Counters on Crawling Barrens remain on it when it stops being a creature. If it becomes a creature later, they'll apply to it. |
| 9/25/2020 |
Unless Crawling Barrens is already a creature, its second ability causes the +1/+1 counters to be put onto a noncreature land. Abilities that apply or trigger when counters are put on a creature you control won't do so. |
| 9/25/2020 |
A noncreature permanent that turns into a creature can attack, and its  abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature. |
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