However, that's mainly due to ST05-001-shanks's extremely limited effect
The mulligan system is the same as for sanctioned formats, and the deck construction rules follow the same color identity rule as the multiplayer version does
I believe we just wanted to have all the battles work the same way even though they had a variety of card types on the reverse face
There are Retro Frames, Mini Retro Frames, Sketch Cards, Retro Frame Fetch Lands, Borderless Cards, Extended-Art Rares and, of course, normal cards and foils
Check it out: Total Rare Value Prior to Release: $821 (Estimated) $497 more than Masters 25 ($324) $468 more than MM17 ($353) $68 more than Iconic Masters ($753) $517 more than MM15 ($304) Average Rare Value Prior to Release: $15.50 (Estimated) $9.31 more than Masters 25 ($6.11) $8.85 more than MM17 ($6.65) $1.55 more than Iconic Masters ($13.95) $9.77 more than MM15 ($5.73) Im sure that some of you want to quibble with my $5/rare estimate for the unknown cards, but were so far ahead of the game on value with Ultimate Masters that it doesnt even matter all that much if the rest of the set is a complete bust