The others have been chosen because theyre staples of different MTG formats
Delivery times vary depending on your location
Loads of fun stuff is out there for the countering, and this is pretty strong
Any creature the player controls that couldn't be targeted by the original spell (due to shroud, protection abilities, targeting restrictions, or any other reason) is just ignored by Mirrorwing Dragon's ability
Archivist of Oghma The problem with Stax cards that prevent certain actions, like Aven Mindcensor, is that while you might get the drop on one player, from then on your opponents can play around your card until it's removed
Lasting Tarfire's ability will check as your end step starts to see if you put a counter on a creature this turn