If the card has any mandatory additional costs, such as that of Cathartic Reunion, you must pay those to cast the card
At the end of your turn, if something you controlled left the battlefield, it puts a +1/+1 counter on each tapped creature you control, then untaps themperfect for decks that like to attack or sacrifice creatures
They may play those cards until the end of their next turn
But I also think DIY boxes run too many risks of not meeting enough of the criteria I need when considering a deck box
2021-11-19 If an effect allows you to cast a spell without paying its mana cost, you cant cast that spell for its cleave cost.
The Charizard ex SAR features a dark, metallic shiny Charizard with dramatic fire effects one of the most visually striking Charizard arts in the modern era