Being able to passively do even just 50 damage with poison can also be good at just forcing your opponent to either retreat or switch out of the poison as it can turn into 100 damage going back into your turn
Even Thunder King Rai-Oh is forced to stand by and watch, helpless.[spoiler=Link to the Article] [spoiler=When Synchro Summoned, cards and effects cannot be activated.]Next, no cards or effects can be activated when Star Eater is successfully Summoned
Still others come to the game and immediately become beloved deciduous design tools, like Equipment
Even so, its usually free to play and gives you mana base some added utility
Dendra SAR Triplet Beat With an action pose mid-battle, Dendras SAR exudes energy
Black Mage also provides an alternative way to apply pressure by casting cheap interaction, which is something most Commander decks want to be doing these days anyway