If one of those creatures can't attack its owner that turn due to a spell or ability (such as Chronomantic Escape), you may have it attack another player, attack a planeswalker an opponent controls, attack a battle an opponent protects, or not attack at all
Being only 3 mana it perfectly curves out into Perrie on turn 4 giving your choice counter off of the toolkit
Black: Toxic Deluge
Legendary Creature - Demon Berserker Color tag templates(None) Kederekt Parasite Whenever an opponent draws a card, if you control a red permanent, you may have this creature deal 1 damage to that player
Im going with cards that specifically call out tokens for this ranking, but there are lots of mechanics and abilities that get better when you add tokens to the mix
While green and red have little in the way of deck manipulation, there are still ways to optimize Svellas ability