mschf booster box Magic: The Gathering Mastery Pack Guardian contains more than 70 new cards for Guardian heroes MSCHF Boosted Packs V4 "Spring

It hoses mana bases, like dual lands, considerably

Whenever one of these cards enters the battlefield, players put The Ring emblem into play and assign a creature to be their Ring-bearer

Mega Kangaskhan ex and Darkrai ex are a lethal combination, particularly when paired with the right combination of Supporters

I think with great design you could safely get up to about 25% lands in your cube if you so desired

Given that these are borderless cards with new art and sometimes a second treatment that can be tailored to a new look and theme, expect WotC to continue inviting these to set releases and keep this amount within a reasonable range

Not to mention, the flying and vigilance will allow you to end games relatively quickly, or just Ninjitsu the card back to hand cast a Kaito, Bane of Nightmares instead