In the latter case, since the door becoming unlocked is what causes the ability to trigger, effects that cause abilities that trigger when a permanent enters to trigger an additional time (such as that of Panharmonicon) won't apply
Opponents either lose 5 life or discard a card, and neither option feels good
2 The Aetherspark A Planeswalker For Every Deck One of the hardest planeswalkers to kill in Magic, The Aetherspark doesnt work like your traditional planeswalker
(Some abilities can also target unexerted cards.) But not using them has less of a direct benefit - you dont need to defend your life points, as in MTG or Yu-Gi-Oh!, so leaving cards upright is typically only worthwhile if theyre likely to be challenged by your opponent and you need them for a future turn
Even so, rating certain cards above others in this list is rather arbitrary as they often have minimal overlap in application or archetypes
There are no cards, effects, or spells in the game that remove monarch from play