Even with the downside, the benefit you get from information and making them discard a key spell is worth the life loss, and control/combo decks hate to see a turn-1 Thoughtseize
But once you start combining multiplicative mana effects and mana sinks like activated abilities or Buyback spells, anybody who isnt already comboing off will struggle to keep up
This is fantastic, particularly if you made the agonising decision to use a couple of powerful cards as Ink earlier in the game
You can also extend the concept by playing cards like Mizzix, Replica Rider, Vega, the Watcher, Keeper of Secrets, and Flaming Tyrannosaurus, which reward you for playing cards from any zone other than your hand
Players should use creatures like Frontline Medic to protect Aragorn, as well as powerful equipment cards like Mithril Coat to make him stronger and more resilient in every combat phase
There are a lot of equipment that can be included but Im going to focus on a handful that you should look at including in your own Captain America deck