| 4/26/2014 |
Quarry Colossus's ability is mandatory. If you control the only creatures when that ability triggers, you must choose a creature you control (which could be Quarry Colossus itself) as the target. |
| 4/26/2014 |
The value of X is determined as the ability resolves. If you control no Plains at that time, put the creature on top of that library. |
| 4/26/2014 |
If there are fewer than X cards in that player's library, put the creature on the bottom of that library. |
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