creatures die constantly in Commander games, and guaranteeing value from your mana investment before it shuffles off to the graveyard is irresistible
As white typically runs creature buffs this has good synergies within the kinds of places you might want it
Where Warrant suffers relative to other options is against utility creatures, mainly mana creatures like Llanowar Elves and Incubation Druid, but most control players are happy to see those cards because they can focus their answers on the big threats with little threat of dying from the cheap cards
Yes, you can pay 3 mana to stick a counter back onto Iceberg before you untap, and sure, you can do cute things to reduce costs or repopulate your ice counters with Rimefeather Owl, Zirda, the Dawnwaker, and proliferate triggers
Into the Inklands Card List Want to learn about the new Location cards