They have the option to sacrifice it to stop the damage, but that requires they spend three mana and give everyone else at the table a card
Fleischer also explains that early designs for the cards explored mechanics that reflected the types of weapons wielded by the armies of Warhammer 40,000 that we dont normally see in Magics more traditional fantasy settings, but that this idea was ultimately dropped in favor of focusing on the factions instead
That said, this mechanic isnt anything we havent seen before, as its basically yet another version of Kicker
The price for the easier mana of a Temur commander instead of all five colors is losing access to powerful cards like Rivaz of the Claw, Taigam, Ojutai Master, Ancient Brass Dragon, and the other 5-color dragons
Dialga EX & Melmetal The Indestructible Wall This Metal-type deck is a defensive powerhouse, built to stall enemy attacks while gradually building up Energy for powerful strikes