if you assume, on average, you're drafting 31 playables for your deck (23 spells, 5 lands, 3 sideboard cards) then approximately 10% of your cube could potentially be strong sideboard cards and the resulting decks would be 'more powerful' than a cube with no sideboard cards
(2/5/2021) The subtype Shapeshifter that appears on the type line is mostly there to reinforce the flavor
5 Raul, Trouble Shooter Turn That Self-Mill Into Card Draw Self-Mill effects have long been used to support Reanimator strategies in various Magic formats, but it's rare that the mechanic sees much love beyond that
Rune-Tail, Kitsune Ascendant will generally flip immediately when you play it (especially considering a lot of attacks coming your way may be directed to your Planeswalkers instead of your life total), so it will make your creatures very resilient blockers, particularly Wall of Glare
The artwork captures the Pokmons energetic and quirky nature, giving it a unique charm
This card's art captures Scar's attitude to perfection