This type of set is ideal for groups who enjoy tribal synergies, colour identity, and visible deck lanes
the former earn you coins you can then use on boosters, while the latter can be used to create or clone cards to fill a deck rather than chancing it with booster packs
These apply to all creatures, planeswalkers, and players , so everyone at the table will benefit from this layer of protection
The pair of Meld cards that create Urza Planeswalker are Urza, Lord Protector legendary creature, along with The Mightstone and Weakstone legendary Artifact
Its not that Rat Colony/Relentless Rats have never dipped into sacrifice synergies, but cards like Marrow-Gnawer and Karumonix, the Rat King dont incentivize you to sacrifice your rats like Verminister
It has great single-target removal spells like Path to Exile as well as a few sweepers like Time Wipe, and conditional cards like Dusk that help preserve a player's battlefield while wiping out an opponent's or two