Level

A Monster Card's Level is a rough indication of how powerful that card is, represented by a number of stars in the top-right.

Level 4 or lower monsters


Can be Normal Summoned to the field, unless a card condition specifically prohibits it, and/or implies a special condition in which it must be summoned another way, for example

Level 5 or 6 monsters


Can be Tribute Summoned by Tributing 1 monster on your side of the field, unless a card condition specifically prohibits it, and/or implies a special condition in which it must be summoned another way.

Level 7 or higher monsters


Can be Tribute Summoned by Tributing 2 monsters on your side of the field, unless a card condition specifically prohibits it, and/or implies a special condition in which it must be summoned another way.