mtg lord of the rings ring cards One to Rule Them All | the Put a burden counter on The One Ring One Ring Card From Magic:

This works best when you already have an object you wish to copy

Well worth it for that key card in the command zone

Also Lightning Bolt working as a Giant Growth in certain situations, such as dodging an opposing Bolt for example, has blown me out in many games

This means that if you want four copies with matching art to play in a deck, three of the four would actually be cheaper as singles than by buying the Secret Lair drop itself

Eidolon of Blossoms Lets change things up a bit, shall we

For just 4 mana, you can put anything into play, from a massive creature to an Omniscience, bypassing their steep mana costs