Shepherd of Scions: Deal 1 damage to Eldrazi Ruiner and place an Eldrazi Scion creature from your figure graveyard on an adjacent empty space
This can easily be a five-mana Craterhoof Behemoth-esque effect for kindred decks that are not in green, even if they are in green, this is still a solid anthem effect
One-sided board wipes are almost always the best kind, and while you cant have any untapped lands on the turn you want to take advantage of this, this isnt a big deal if youre down to your last 4 mana or have mana rocks on hand
Skrelv can be tapped to give any creature you control toxic 1, unblockable, and hexproof from any one color until end of turn
And if you happen to have access to the original dual lands ( Dang, look at you, baller
In fact, Arena is the primary way new players can get into the competitive Magic scene