Zagras, Thief of Heartbeats

Deathtouch scales strangely as a keyword: on one body it deters, but handed to a whole board it becomes an assault. This is built on exactly that arithmetic. The static ability granting deathtouch to every other creature you control converts a wide, disposable crew into a phalanx that trades up against anything, turning chump-blockers into removal and would-be attackers into liabilities. The planeswalker clause sharpens the point: combat damage from any of your creatures, not just a large one, destroys the walker outright rather than chipping loyalty, so a swarm of small deathtouchers doubles as a wholesale answer to the game's most durable permanents. And the two halves point the same direction. The party discount rewards fielding a diverse crew (Cleric, Rogue, Warrior, Wizard), and that same wide, cheap board is exactly what the deathtouch anthem wants: more bodies means more deathtouch attackers, more planeswalker kills, a cheaper cast. Going wide feeds the price, the swarm, and the combat math at once, with a 4/4 flier on top that can close on its own. It functions as a lord in the older sense of the word, a creature whose presence rewrites the combat math of every other creature beside it. The twist is that it hands out lethality rather than a stat bonus, so the army it commands is not bigger; it is simply fatal to touch.