Verzauberung — Aura
Verzaubert eine Kreatur
Immer wenn die verzauberte Kreatur angreift, lege eine +1/+1-Marke auf sie. Falls dann drei oder mehr +1/+1-Marken auf ihr liegen, opfere die Prüfung der Thassa.
Wenn du die Prüfung der Thassa opferst, ziehe zwei Karten.
If you sacrifice the Ordeal in some other way, its last ability will trigger.
The check of whether the enchanted creature has three or more +1/+1 counters on it happens as part of the resolution of the attack triggered ability. If the third +1/+1 counter is put on the enchanted creature any other way, you won't sacrifice the Ordeal until the next time the creature attacks.
The +1/+1 counter is put on the creature before blockers are declared and before combat damage is dealt.