Containment Construct | Illustration by Julian Kok Joon Wen Discard payoffs either reward you or punish opponents when you make a player discard cards
About two weeks ago, I was attacked by some giant beater, and I activated this, dropped a Gravedigger to block, brought back a big flyer from my graveyard (Hellkite Overlord), and then at the end of the turn, I had swapped a Gravedigger for a large beater and prevented a bunch of damage all for the cost of a lowly red mana
This was pretty common and utterly game breaking
The Mega Charizard X ex from Phantasmal Flames saw similar outsized value given how much emphasis was put on the show-runner for that set, and well likely see the same kind of thing echoed in Chaos Rising
(If he does appear early, you can always add him to your inkwell in an emergency.) Thats thanks to Mauis huge challenging power, with both eight strength and eight willpower - enough to banish most characters in the game and live to fight again - as well as the similarly massive three lore he grants on a quest