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.
What is the name of the symbols â<â and â>â? I know that ^ is called a caret, but this doesn't seem to apply to the similarly shaped but nonetheless different < and > symbols. The only names I've heard them called is the less-than sign and the greater-than sign, but those names seem rather informal and apply only to their use in math. The symbols are used in other contexts as well, so it seems they would have less specific names.