Darksteel Ingot. Indestructible is a static ability that means that any permanent that has indestructible cannot be destroyed, and cannot be destroyed as a result of lethal damage.
The less-than symbol (<) represents an inequality in which the number or problem on the left is smaller than that on the right; however, it can be reversed (>) to show that the item on the left is greater than that on the right.
Learn the greater than symbol and the less than symbol. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-...