So that may not be obvious, so let's walk you through an actual combat: You attack with Laccolith Whelp Your foe blocks with Wall of Ice You can deal one damage to the Wall of Ice immediately, which prevents your combat damage later
You get the artifact creature master with Urza, Chief Artificer, the gargantuan The Capitoline Triad, who fuels historic synergies and encourages you to play massive artifacts, and then Imskir Iron-Eater keeps your artifacts going with a strong draw effect when it comes into play
I think this will encourage some wrong play, given every player who buys in gives each of their foes incrementally more mana, but I am utterly fascinated to see what happens when this hit the board
1# Crackdown Crackdown Mercadian Masques, Rare Crackdown is a white enchantment with one printing in Mercadian Masques
Target creature gets -0/-9999 until end of turn