all cards are enchantments mtg Aura Farming: Magic's 10 Coolest Enchant Creature All cards will be carefully packed for safe transit MTG Arena: 10 Best Enchantments

This is much like the original Secret cards in Pokmon sets

The numbers you may choose include 0 and 10

As Teferi and Narset have reminded us over the past couple of weeks, three mana is the sweet spot for planeswalkers

Masters or Universes Beyond sets may be included as inventory allows but aren't guarnateed for new set release months

I see this stabilizing at $2-$3 much like Thalia, Guardian of Thraben did for a while, but I doubt itll make more of a financial impact than she did

Using either of these altars and one of the myriad cards, you can create creature tokens to attack, then, instead of sacrificing them at the end of the turn, you can sacrifice them for mana to play additional spells or activate Aggravated Assault to repeat the process