First declare you are going into the Battle Phase
Now, its starting to make moves toward that without really addressing the underlying issues that lead to the mayhem in the first place
Here are a bunch of "precons" using only cards from the Avatar set along with upgrade guides using cards from the bonus sheet or other supplementary products
I see the supply from Time Spiral Remastered driving the price down in the short term, but this is a card that should rebound nicely
For example, Annihilate will be card advantage if it resolves normally targeting a creature an opponent controlsyou lose one card from your hand but you also draw a card, for a net gain of zero cards, and your opponent loses one card, so you're up one card relative to them
Spend this mana only to cast an instant or sorcery spell or to gain a Class level.": Level 3 you cast an instant or sorcery spell, that spell deals damage to each opponent equal to the number of instant and sorcery spells you've cast this turn