Then you can level up and drop your equip costs by 2 which is great with the aforementioned Sunforger and Skullclamp
This is a good mix of getting the most out of your graveyard and also getting to recur your biggest threats and discard some cards too
All of the Merlin cards give an ability when returned to hand, like the Merlin Crab which gives another character +3 strength when challenging, when they are played, and when they leave play (which can be in the same turn for a super boost), and Madam Min returns cards to hand when played
The high mana and equip cost also mean that, in most cases, Cloak is a highly telegraphed move , and most people will opt to run Greaves for the much better mana economy, or Boots for hexproof over shroud
Mana Vault is a card that has seen huge success over multiple formats because of its simple yet powerful ability when tapped to grant you three colorless mana for a single mana