That means two characters could quest (or the same one could quest twice), and the next character would cost 4 Ink less
Christopher Rush, by the way, drew the Black Lotus, the most expensive vintage card in MtG
A horde of 5/5s is already scary for most opponents, but the trick here is that you only need a creature to be 2/2 during the Declare Attackers step for it to get the buff
Zo-Zu is a three-mana 2/2 that makes it so that whenever a Land enters the battlefield, Zo-Zu deals two damage to that Lands controller
Growing your own Forest in this way is a great thematic representation of Treefolk as a type, and it even synergizes with several notable Treefolk, like Dungrove Elder and Battlewand Oak
This was a stalwart of Standard mono-green decks when it first came out, and its still a scary threat there as early as turn 2