After it triggers in your upkeep, you can look at the top card of their library and you can cast it with your mana as though it were mana of any color, so if you flip over Lightning Bolt you can tap an Island and cast it
Collectors and competitive players alike recognize its status among top-tier mythic rare MTG cards due to this unparalleled utility
This is, of course, balanced out by the fact that these are exhaust abilities, meaning each can only be activated once unless the player can bounce Loot off the battlefield and recast him
Mana abilities don't use the stack, which means that they can't be responded to
If you dont want to go that deep, Id propose this alternate sideboard: 3 Ancient Grudge 3 Torpor Orb 2 Volcanic Fallout 1 Pyroclasm 2 Noxious Revival 3 Nihil Spellbomb 1 Emrakul, the Aeons Torn Noxious Revival is another odd one, but its easier to justify
There is no room for discussion when it comes to grading