For 3 mana, youre almost guaranteed three draws as the turn passes around the pod and your opponents decline to pay the 1. Theres a higher chance than Mystic Remora that your opponents will have the mana available to pay the tax, but players like to use all their available mana every turn, even if it means youll draw cards off of their spells
Being unable to block makes it a card you only really want in aggressive creature decks but his light coloured mana requirements, artifact/discard synergies, and other many perks make him pretty common to see
The other possibility is playing Invasion of Regatha in a dedicated burn deck since the backside seems pretty powerful with Play with Fire, Lightning Strike, and friends as a weird twist on Torbran, Thane of Red Fell, although I'm not sure a burn deck wants to use multiple burn spells or attacks to remove the five defense counters to defeat the battle
Meren decks grind opponents into submission through relentless value
It works best with artifacts since the cost reduction makes colorless spells free with a wheelyou can even construct colorless-only combos like Karn, the Great Creator and Mycosynth Lattice to shut down your opponents
