Katilda, Dawnhart PrimeHow it works & interactions with other cards

A Beacon for Humans

Katilda provides two distinct advantages to your Human creatures. First, she grants protection from Werewolves, meaning she cannot be blocked, targeted, dealt damage, or enchanted by Werewolf permanents. Second, she grants every Human you control an activated ability to tap for mana. This mana can be any color that the specific creature is; for example, a white Human can produce white mana, while a multicolored Human can produce any of its colors.

Step-by-Step Resolution

When Katilda is on the battlefield, the mana-generating ability is added to your Humans as a static effect. To use it, ensure the Human does not have summoning sickness (unless it has Haste). You tap the creature as a mana source, which does not use the stack and cannot be responded to. For her final ability, you pay six mana and tap Katilda; upon resolution, every creature you control—Human or otherwise—receives a +1/+1 counter.

Common Misconceptions

A common mistake is assuming Katilda's protection extends to your other creatures; it only applies to Katilda herself. Additionally, remember that the mana ability she grants depends on the creature's own colors, not Katilda's. If you control a colorless Human (though rare), it would not be able to produce any mana through this ability because it has no colors.

Strategic Timing

Play Katilda early to accelerate your mana pool, allowing you to cast high-cost spells far ahead of the curve. In the late game, she serves as a mana sink. If your opponent's board state stalls yours, use her activated ability at the end of your opponent's turn to grow your army without leaving yourself vulnerable during your own main phase.

Interaction examples

Ramping with Non-Humans

Llanowar Elves

If you have Llanowar Elves and Katilda on the battlefield, the Elves do not gain the ability to tap for 'any of its colors' because they are an Elf Druid, not a Human. The Elves can still tap for Green mana using their own ability, but they do not benefit from Katilda's mana-granting static ability.

The Global Buff

Birds of Paradise

While Birds of Paradise is a Bird and doesn't gain the mana-tapping ability from Katilda, it does benefit from her final activated ability. When you pay {4}{G}{W} and tap Katilda, the +1/+1 counter is placed on 'each creature you control.' This includes Katilda, any Humans, and the Birds of Paradise.