Level up

Level up is a mechanic used in Rise of the Eldrazi on Leveler cards and Modern Horizons.

Description
The ability can only be activated anytime the player could cast a sorcery. When the ability resolves a level counter is put on the creature and its level is increased to the number of level counters on the card.

When the creature reaches a certain level, its power and toughness changes and the creature may gain additional abilities. For example, Knight of Cliffhaven starts out as a 2/2 creature for. When leveled up at least once for, it becomes a 2/3 creature with flying. If it was leveled up at least four times, it becomes a 4/4 creature with flying and vigilance.

Creatures with level up have a different card frame in a similar manner as Flip cards and planeswalkers were printed with a different card face. The textbox is separated into the strips with the top strip showing the Level up ability with a P/T-box on the right showing the base power/toughness. On the stripes below it are arrow-like boxes on the left showing the levels a change in the creature occurs with P/T-boxes on the right. In between the box designating the level and the P/T-box is space for additional abilities if the creature gains any.

For example Knight of Cliffhaven gains Flying when she becomes level 1. Also, her power/toughness change from 2/2 to 2/3 when she becomes level 1. Not all creatures with Level Up gain abilities and not all creatures' power/toughness change. Enclave Cryptologist is an example of a creature with Level Up that does not have a power/toughness change.

Trivia

 * Level Up was featured as rules card 1 of 5 in the Rise of the Eldrazi set.
 * Level Up was received with mixed reactions. The layout confused a lot of players.