The Fantastic Four deck contains 4 Borderless cards, 1 for each member of the team
1 Teferi's Protection
cant activate it without delaying drawing Warden till turn 5 (might as well Blackmail Kolaghans Command actually) My turn 3: Make Warden a warrior, attack with 3/3 (12 life) Opponent turn 4: Cast, and make Warden a 3/3, dont attack My turn 4: Make Warden a lifelinking spirit, dont attack Opponent turn 5: make Warden a lifelinking spirit, attack (15 life) My turn 5: Make an 8/8 Actually, wait, 15 life is less than 19 life
The Absolute Justice deck released alongside Paramount War brought Black colored cards into play, as did Paramount War in general
The flavor of summons being saga enchantments alone is already generally a win for me, no matter how each of them is designed
Ruhan of the Fomori very simply embodies this idea by attacking randomly each turn