Saint Traft and Rem Karolus — ruling 1

If it’s the fourth or subsequent time the first ability has resolved in a turn, nothing happens.

Saint Traft and Rem Karolus — ruling 2

The last ability of Saint Traft and Rem Karolus will trigger whether you tapped any creatures to pay for the spell or not, as long as it has convoke.

Saint Traft and Rem Karolus : règles, fonctionnement et interactions (MTG)

Saint Traft and Rem Karolus 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

Whenever Saint Traft and Rem Karolus becomes tapped, create a 1/1 red Human creature token if this is the first time this ability has resolved this turn. If it's the second time, create a 1/1 blue Spirit creature token with flying. If it's the third time, create a 4/4 white Angel creature token with flying. Whenever you cast a spell that has convoke, untap Saint Traft and Rem Karolus.

How it works : Saint Traft and Rem Karolus

Original English text — Wizards of the Coast / Scryfall

#1April 14, 2023· Wizards of the Coast
If it’s the fourth or subsequent time the first ability has resolved in a turn, nothing happens.
No other card is named in this ruling.
#2April 14, 2023· Wizards of the Coast
The last ability of Saint Traft and Rem Karolus will trigger whether you tapped any creatures to pay for the spell or not, as long as it has convoke.
No other card is named in this ruling.