Topiary Lecturer — ruling 1

An increment ability will only trigger if the permanent it's on is a creature. Similarly, if the permanent is no longer a creature when its increment ability resolves, the ability won't do anything.

Topiary Lecturer — ruling 2

When comparing the mana spent to the creature's stats as the increment ability resolves, it's possible that the stat that is less than the mana spent changes from power to toughness or vice versa. For example, say you control a 1/3 creature with increment and you pay two mana to cast a spell. Since the amount of mana you spent is greater than the creature's power, increment will trigger. While the increment ability is on the stack, an effect gives the creature with increment +2/-2, making it a 3/1. When the increment ability resolves, the creature will still get a +1/+1 counter since the amount of mana you spent is greater than that creature's toughness.

Topiary Lecturer — ruling 3

Whenever you cast a spell, check the amount of mana you spent to cast it against the power and toughness of the creature with increment. If the amount of mana you spent isn't greater than either of that creature's stats, increment won't trigger at all.

Topiary Lecturer — ruling 4

If increment triggers, the comparison will happen again when the ability tries to resolve. If the amount of mana spent to cast that spell isn't greater than either of that creature's stats anymore, the ability will do nothing.

Topiary Lecturer — ruling 5

The increment ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.

Topiary Lecturer : règles, fonctionnement et interactions (MTG)

Topiary Lecturer 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

Increment (Whenever you cast a spell, if the amount of mana you spent is greater than this creature's power or toughness, put a +1/+1 counter on this creature.) : Add an amount of equal to this creature's power.

Complete guide

Topiary Lecturer is a versatile Elf Druid that scales its utility as the game progresses. By using the new Increment mechanic, it grows into a formidable mana producer every time you cast a spell that exceeds its current physical stats.

Understanding Increment

Increment is a triggered ability that watches your spellcasting habits. When you cast a spell, the game checks the total mana spent against the Topiary Lecturer's power and toughness. If the mana spent is greater than at least one of those values, the ability triggers. Note that this checks the actual mana paid, including additional costs or discounts, rather than the spell's mana value.

Resolution Step-by-Step

First, you cast a spell and pay its costs. If the criteria for Increment are met, the ability goes on the stack above your spell. Second, both players have a chance to respond. Third, as the Increment ability resolves, it checks the power and toughness again. If the mana spent is still greater than either value, Topiary Lecturer receives a +1/+1 counter. Finally, your original spell resolves.

Common Pitfalls

A common mistake is forgetting that Increment checks twice: once when you cast the spell and once when the ability resolves. If your opponent casts a spell to buff the Lecturer's stats in response to the trigger, the ability may do nothing upon resolution. Additionally, if Topiary Lecturer is no longer a creature when the ability resolves, no counter is placed. Importantly, the mana produced by its tap ability is based on its current power at the time the mana ability resolves.

Strategic Timing

To maximize Topiary Lecturer, sequence your spells from lowest mana cost to highest. Since the Lecturer starts as a 2/2, a 3-mana spell will trigger it easily. Once it becomes a 3/3, you will need to spend at least 4 mana to trigger it again. Use its mana generation early to ramp into larger spells that ensure the Increment triggers continue to land.

Interaction examples

Ramping with the Simulacrum

Solemn Simulacrum

You have Topiary Lecturer (a 2/2) on the battlefield and cast Solemn Simulacrum for 4 mana. Since 4 is greater than its power (2) and toughness (2), Increment triggers. The Lecturer becomes a 3/3 before the Simulacrum even enters the battlefield. Now, when you tap the Lecturer for mana, it produces 3 green mana instead of 2.

Early Game Growth

Sakura-Tribe Elder

If you cast Sakura-Tribe Elder for 2 mana while Topiary Lecturer is a 2/2, Increment will not trigger because 2 is not greater than 2. You must spend more mana than the current stats to see growth. However, if an effect had reduced the Lecturer to a 1/1, casting the Elder would successfully trigger Increment and add a counter.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Topiary Lecturer

Original English text — Wizards of the Coast / Scryfall

#1March 20, 2026· Wizards of the Coast
An increment ability will only trigger if the permanent it's on is a creature. Similarly, if the permanent is no longer a creature when its increment ability resolves, the ability won't do anything.
No other card is named in this ruling.
#2March 20, 2026· Wizards of the Coast
When comparing the mana spent to the creature's stats as the increment ability resolves, it's possible that the stat that is less than the mana spent changes from power to toughness or vice versa. For example, say you control a 1/3 creature with increment and you pay two mana to cast a spell. Since the amount of mana you spent is greater than the creature's power, increment will trigger. While the increment ability is on the stack, an effect gives the creature with increment +2/-2, making it a 3/1. When the increment ability resolves, the creature will still get a +1/+1 counter since the amount of mana you spent is greater than that creature's toughness.
No other card is named in this ruling.
#3March 20, 2026· Wizards of the Coast
Whenever you cast a spell, check the amount of mana you spent to cast it against the power and toughness of the creature with increment. If the amount of mana you spent isn't greater than either of that creature's stats, increment won't trigger at all.
No other card is named in this ruling.
#4March 20, 2026· Wizards of the Coast
If increment triggers, the comparison will happen again when the ability tries to resolve. If the amount of mana spent to cast that spell isn't greater than either of that creature's stats anymore, the ability will do nothing.
No other card is named in this ruling.
#5March 20, 2026· Wizards of the Coast
The increment ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.
No other card is named in this ruling.