Download Test Map & Resource Pack: \rbr\rbrCommands:\rbrscoreboard objectives add Stimer dummy\rbrscoreboard objectives add vest dummy\rbrscoreboard objectives add blood stat.damageDealt\rbrscoreboard objectives add killspeed totalKillCount\rbrreplaceitem entity @a slot.hotbar.0 minecraft:ironsword\rbrscoreboard players add @a Stimer 2 {SelectedItem:{id:minecraft:goldensword}}\rbrscoreboard players add @a Stimer 2 {SelectedItem:{id:minecraft:ironsword}}\rbrscoreboard players add @a Stimer 2 {SelectedItem:{id:minecraft:woodensword}}\rbrscoreboard players remove @a[scoreStimermin=1] Stimer 1\rbrreplaceitem entity @a[scoreStimermin=5,scoreStimer=5] slot.hotbar.0 minecraft:woodensword 1 0 {display:{Name:Shark}}\rbrreplaceitem entity @a[scoreStimermin=10,scoreStimer=10] slot.hotbar.0 minecraft:goldensword 1 0 {display:{Name:Shark}}\rbrreplaceitem entity @a[scoreStimermin=15,scoreStimer=15] slot.hotbar.0 minecraft:woodensword 1 0 {display:{Name:Shark}}\rbrreplaceitem entity @a[scoreStimermin=20,scoreStimer=20] slot.hotbar.0 minecraft:ironsword 1 0 {display:{Name:Shark}}\rbrexecute @a[scoreStimermin=1] ~ ~1 ~ detect ~ ~ ~ water -1 effect @p[c=1] minecraft:nightvision 1 5 true\rbreffect @a[scoreStimermin=1] minecraft:invisibility 1 25 true\rbreffect @a[scoreStimermin=1] minecraft:waterbreathing 1 25 true\rbrexecute @a[scoreStimermin=1] ~ ~1 ~ detect ~ ~ ~ water -1 effect @p minecraft:saturation 1 1 true\rbrexecute @a[scoreStimermin=1] ~ ~ ~ detect ~ ~ ~ air -1 effect @p minecraft:poison 2 1 true\rbrexecute @a[scorebloodmin=1,scoreStimermin=1] ~ ~ ~ execute @e[c=1,type=!Player] ~ ~ ~ particle blockdust152 ~ ~1 ~ 0.5 1 0.5 0.1 100 \rbrexecute @a[scoreStimermin=1] ~ ~1 ~ detect ~ ~ ~ water -1 particle wake ~ ~ ~ 0.3 0.3 0.3 0.01 10\rbrexecute @a[scoreStimermin=1] ~ ~1 ~ detect ~ ~ ~ water -1 particle bubble ~ ~ ~ 0.3 0.3 0.3 0.001 1\rbrscoreboard players set @a vest 0\rbrscoreboard players set @a vest 1 {Inventory:[{Slot:102b,tag:{ench:[{id:8,lvl:10}]}}]}\rbrreplaceitem entity @a[scorevestmin=0,scorevest=0,scoreStimermin=1] slot.armor.chest minecraft:leatherchestplate 1 0 {display:{Name:sharkvest},ench:[{id:8,lvl:10}]}\rbrreplaceitem entity @a[scorevestmin=0,scorevest=0,scoreStimermin=0,scoreStimer=0] slot.armor.