Well there are three problems:
1. I can't find this spell in the Spell Compendium. Not in the Druid spells or the Ranger spells. Give me the page number please.
2. Sensalar's sheet doesn't have known spells and prepared spells for the day. This needs to be fixed asap, especially if you guys intend on fighting the Dwarves.
3. This spell will, as a side effect, reduce the tavern floor to rubble? I'm not against it of course, but maybe you should rethink the consequences? Who will pay for the mason work needed to fix the floor, the toppled tables with food and drink for the other patrons, and the premature closing of the inn? A night's income for such a large establishment is no small matter, and the repairs will be steep as well. I'm just saying, does Sesnalar intend to initiate combat with a spell that has such high collateral damage?
Theroc: The way you worded it and pulled out your sword, that's an Intimidate check for sure.