Despite how limited Strip Mine is in its use, just because of how strong it is, the card is always going to have value
Its very similar (and often compared) to Treasure Cruise, but I think its the worse of the two
Second turn, you untap Shelldock Isle, draw Lions Eye Diamond, play it, produce blue with it, and use the blue mana to activate Shelldock Isle
Berserkers' Onslaught has a relatively low mana cost for the effect, and with how easily Animated Army can ramp, you can get Berserkers' Onslaught onto the battlefield rather early to get the most out of its effect
You also have Mr
(6/6/2025) When two cards (for example, Fang, Fearless l'Cie and Vanille, Cheerful l'Cie) are melded, the result is a single permanent (in this case, Ragnarok, Divine Deliverance) that's represented by two cards