This makes the smaller, cheaper effects you might want more of in your deck easier to get
Rolling the planar die costs an amount of mana equal to the number of times the player taking that action has done so that turn
Mikaeus, the Unhallowed is my favorite among his works
The First Chapter Starter Deck Amber & Amethyst If you want an easy to play deck with straightforward cards, this First Chapter starter is your best bet
But in the late game, Mono-Red Aggro plays out much differently than White Weenie thanks to having a ton of burn spells, which allows it to close out the game without attacking
You get an emblem with "Whenever you cast a red spell, this emblem deals X damage to any target, where X is the amount of mana spent to cast that spell." Chandra's first ability uses the stack and can be responded to, even if no targets were chosen