AI DraftFeb 26, 2026
Grim Monolith + Nyxbloom Ancient
Overview
Grim Monolith’s 
: Add 
is an activated mana ability that includes the tap symbol, so activating it is “tapping a permanent for mana” ; Nyxbloom Ancient’s replacement effect makes that event produce three times as much mana, so tapping Grim Monolith produces nine colorless instead of three and the activated mana ability resolves immediately after activation .
: Add is an activated mana ability that includes the tap symbol, so activating it is “tapping a permanent for mana” ; Nyxbloom Ancient’s replacement effect makes that event produce three times as much mana, so tapping Grim Monolith produces nine colorless instead of three and the activated mana ability resolves immediately after activation .Step 1
You activate Grim Monolith’s ability by paying its activation cost that includes , which is “tapping a permanent for mana” under rule .
, which is “tapping a permanent for mana” under rule .Step 2
Because Grim Monolith’s ability is an activated mana ability, it resolves immediately after activation rather than going on the stack .
Step 3
Nyxbloom Ancient’s effect replaces the result of the event “tap a permanent for mana” and makes that event produce three times as much mana instead, so the original three colorless becomes nine colorless when the ability resolves .
Step 4
Any triggered mana abilities that triggered from the tap event (for example, an effect reading “Whenever you tap a land for mana, add …”) are not multiplied by Nyxbloom Ancient per the ruling [Ruling 2020-01-24] and are handled separately .
Resolution
If you control both Grim Monolith and Nyxbloom Ancient, tapping Grim Monolith for its ability will produce nine colorless mana (three times the usual three). Triggered mana abilities that trigger from tapping for mana are not multiplied by Nyxbloom Ancient per the existing ruling [Ruling 2020-01-24] and triggered mana abilities are handled differently from replacement effects affecting activated mana abilities .
ability will produce nine colorless mana (three times the usual three). Triggered mana abilities that trigger from tapping for mana are not multiplied by Nyxbloom Ancient per the existing ruling [Ruling 2020-01-24] and triggered mana abilities are handled differently from replacement effects affecting activated mana abilities .Feedback