Thats really quite difficult for Red decks in particular to remove, and it blocks a lot of early game creatures like a champ
You can also get a fast start by putting Vengevines in your graveyard and powering them out on turn two
These types of control decks often need sustainable blockers in the early game, and theres no reason a swarm of regenerating skeletons cant fill this need
One of the best white creatures, Sunny's a big body that returns a cheap permanent from the graveyard to the battlefield ( any permanent, not just a creature), and if our foe doesn't want our Sun Titan to keep generating value every turn, they'll have to spend at least a card dealing with it ASAP
There arent a lot decks that want this card, which is why it sits only at number eight on this list, but its still a good consideration for the decks that do want its effects