Conjure Beast

You summon a beast with a CR of 3 or less. It appears in an unoccupied space you can see within range. You command the beast and speak telepathically with it. The beast stays with you for 10 minutes then vanishes.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher, the CR of the beast increases by 1 for each slot level above 5th.

For example if you cast this spell as a 6th level spell, you can summon a beast with a maximum CR of 4.