They work like Actions so you must show your opponent, use the ability, then discard them
you can run almost any spider ever printed, including Arasta of the Endless Web for some Spider token generation
Swap it for Winged Words which will just outright draw you two cards, rather than exiling them, for the exact same cost if you have your Commander in play
Also known as spheres or orbs, the legendary objects have appeared in every game, but aren't always central to the narrative
Only time will tell if this will hold anywhere near here
In a more open environment, youre not guaranteed that to be the case, although Ill say in each of the last dozen or so games Ive played, Thief of Blood would have paid some dividends (save for the life loss might have been too high)