If you're mana-flooded, overcommitted into a board wipe, or just aren't finding your card draw, being able to recast a spell like this can give you a solid plan on a turn where otherwise you'd have nothing
A control deck counters spells as they're being cast and removes and problem creatures that hit the battlefield
As far as actually playing the deck, there's fun to be had
If you do put Hans into play, they have a strength of three, a willpower of three, and can quest for two
Casting Cost: Card Text: Reach (This creature can block creatures with flying.) At the beginning of combat on your turn, put a +1/+1 counter on target creature you control
check out what that means in our guide to Storyborn, Dreamborn and Floodborn characters