In the middle of Worlds 2020, the 10.21 patch notes have arrived, an update that will mean a before and after in the League of Legends meta for several important reasons.
The first: it comes at a time when all the new League of Legends items are on the PBE . This fact means that many champions will change the way they are played in Summoner’s Rift.
And, the second, because there will be changes to champions that we did not see in the meta for a long time: Corki, Trundle, Karma and even Udyr, who perhaps, finally, receives a graphic update, although he is a champion who deserves a rework full.

League of Legends Patch 10.21 Notes [10/13/2020]
System changes
Movement speed changed from 10/20/30 to 5/20/35%.
Duration decreased from 2.5 to 2 seconds.
Nerves
E CD goes from 15-11 seconds to 20-12.
Additionally, E’s attack speed changed from 30-50% to 20-40%.
E base damage changed from 45-165 to 35-155.
Base E max damage changed from 90-330 to 70-310.
The stack of armor E 8-20 passes to 6-18.
Attack damage increased from 61 to 58.
E Attack Speed changed from 40-80 to 40-60%.
Q damage increased from 75-215 + 100% bonus AD to 70-190 + 115% bonus AD.
Q critical damage increased from 155-475 + 200% bonus AD to 155-455 + 230% bonus AD.
Deadly Q damage scaling changed from 100% to 115% AD.
Destacan varios nerfs significativos como Graves, Nidalee, Camille o Pantheon Support, 4 campeones que se han visto mucho en Worlds y que son prácticamente un pick fundamental en el meta.
Buffs
El ratio de AD de la Q sube de 0.5 a 0.7.
La pasiva de letalidad cambia de 2-12 a 3-18.
El daño adicional por marca del Calibrum de la R pasa de 20-70 a 40-100.
El enraizar de la R pasa de 1 segundo a 1.25 segundos.
La cura de la R con el Severum cambia de 200-400 a 250-500.
El daño en área de la R con Infernum pasa de 75% a 85%.
Los chakrams generados con la R de Crescendum aumentan de 3 a 4.
La curación de la pasiva cambia de 2/3/4/5/6% a niveles 1/5/9/12/15 a 2-7% escalando un poco con el nivel.
El CD de la W cambia de 15 a 15-11 segundos.
El AD por nivel cambia de 3.2 a 3.7.
CD recovery with Ability Mantra passive changed from 2/3/4 at levels 1/7/13 to 2 / 3.5 / 5 at levels 1/6/11.
Mantra passive DC recovery with auto attacks changed from 1 / 1.5 / 2 to 1 at all levels.
The CD of the R changes from 45-36 to 40-34.
R total damage increased from 40-240 to 50-300.