Chandra, Heart of Fire (Promo Pack) [Core Set 2021 Promos] Cat Bird but they all share one

but they all share one weakness: predictability

Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void

1—9 | You may put that card on top of your library

Set: Fallout Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{R} Enchant Creature

Chandra, Heart of Fire (Promo Pack) [Core Set 2021 Promos] Cat Bird but they all share oneSet: Core Set 2021 Promos Type: Legendary Planeswalker Chandra Rarity: Mythic Cost: {3}{R}{R} +1: Discard your hand, then exile the top three cards of your library. Until end of turn, you may play cards exiled this way. +1: Chandra, Heart of Fire deals 2 damage to any target. 9: Search your graveyard and library for any number of red instant and or sorcery cards, exile them, then shuffle. You may cast them this turn. Add six {R}.