A Poor Strip Mine (V.2) might be worth only 17, but a Near Mint Strip Mine (V.2) goes for at least 100
This unique reprint of the Blacker Lotus has a Black Lotus card scribbled all over in various markers to make it into the silver-boarded and cooler Blacker Lotus, only slightly destroying it in the process
Players won't even be thrilled when they finally remove Esper Sentinel, since they probably spent more resources than you to deal with it
(It enters with a +1/+1 counter on it for each color of mana spent to cast it.) At the beginning of your end step, if there are thirty or more counters among artifacts and creatures you control, this artifact deals 10 damage to each opponent
The only downside is that you need to discard two Psychic Energy when using this Move
As the saying goes, yesterdays golden goose might be todays feather duster