Witherbloom, the Balancer — ruling 1

Affinity for creatures means "This spell costs {1} less to cast for each creature you control."

Witherbloom, the Balancer — ruling 2

To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.

Witherbloom, the Balancer — ruling 3

If a spell has multiple instances of affinity, each one applies. For example, if you somehow control two Witherbloom, the Balancers and no other creatures, each instant and sorcery spell you cast will cost {4} less to cast.

Witherbloom, the Balancer : règles, fonctionnement et interactions (MTG)

Witherbloom, the Balancer is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Affinity for creatures (This spell costs less to cast for each creature you control.) Flying, deathtouch Instant and sorcery spells you cast have affinity for creatures.

How it works : Witherbloom, the Balancer

Original English text — Wizards of the Coast / Scryfall

#1March 20, 2026· Wizards of the Coast
Affinity for creatures means "This spell costs less to cast for each creature you control."
No other card is named in this ruling.
#2March 20, 2026· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was.
No other card is named in this ruling.
#3March 20, 2026· Wizards of the Coast
If a spell has multiple instances of affinity, each one applies. For example, if you somehow control two Witherbloom, the Balancers and no other creatures, each instant and sorcery spell you cast will cost less to cast.
No other card is named in this ruling.