Ursula's Return also broke the mold by centering one of its starter decks entirely around a single universe: Encanto
This Dreamborn card gives the lava monster a powerful amount of strength for both offense and defense and only costs six ink to bring to the table
These usually come in their own seasonal or promotional packs, like the three-card Trick or Trade mini packs released around Halloween, or promo tins
In this case, the ones that exert effective effects would be: Munkidori (move damage counters from Poison) Glimmora ex (reduce opponent's Bench to 3) and so on
This means the defensive abilities of white can create soft locks which, unless removed, leave it invulnerable
While very conditional, lets not ignore the fact that some of the best spells in the game (never mind just the formats these two are legal in) make appearances in the maindecks and sideboards of red decks from Pauper to Commander to Legacy and Vintage