It's very popular for Commander players to include three or more colors in their decks, so only having access to black mana is a huge problem
If you can identify the cards that are 1) played a bunch in Legacy/Modern/Commander and 2) about to rotate out of Standard then youre in at the perfect price
Kambal, Consul of Allocation provides additional incidental drain and Esper Sentinel draws cards for minimal cost as per usual and Smothering Tithe does the same for treasures that might get doubled
previous Secret Lair drops received some criticism from players as the result of their foil finish causing the limited-edition cards to bend and curl
Building a deck from 100 cards and no duplicates allowed, barring very rare exceptions such as Relentless Rats with one Legendary Creature as its Commander (hence the formats current name), its a format that allows for some genuinely exciting deck construction and inventiveness, not to mention a great deal of experimentation
Whether youve played this particular RPG series or another, the familiarity of the turn-based battle menu makes for a really nice modal card