advancement grant @a[advancements={nitk:nitk/tyrant_defeat={p_k_e-wither=true}}] only nitk:nitk/enter_nether tyrantfall
tellraw @a[advancements={nitk:nitk/tyrant_defeat={p_k_e-wither=true},nitk:nitk/enter_nether=false}] ["",{"text":"[۩]","color":"green","bold":true},{"text":": ","color":"white","bold":false},{"text":"The Tyrant has been pushed back! Follow him to the Nether!","color":"dark_red"}]