Booyahg

You put your arms up into the air and scream "Booyahg".

Roll a D12 and the result determines what happens.

1 - An explosion happens centered on you that does 1d6 fire damage.

2 - Nearby (20ft) flammable items of clothing burst into flames and deal 1d8 fire damage to whoever is wearing them.

3 - A small puddle of flammable grease appears on one person or item of your choice.

4 - An non hostile small beast appears in the area, the animal that appears is native to that area and is up to the DM's discretion. If there are no native animals in the area a frog appears that will scream loudly giving everyone within 100ft disadvantage on perception checks based on hearing, the frog stays for 5 minutes or until it is killed.

5 - The ground beneath a creature that you can see's feet turns into an acidic mud that requires a strength saving throw against your spell save DC to escape or the enemy takes 1d6 acid damage every turn they remain in the mud.

6 - An enemy of your choice bursts into flames and must make a dexterity save against your spell save dc or take 4D4 fire damage

7 - An enemy of your choice is marked, all spell attacks made on that enemy have advantage until a spell attack hits them.

8 - Thunder crackles and it begins to rain in a small area over an enemy, If the enemy stays under the rain on your next turn you can say "Booyahg" again with a forceful clap and lightning strikes down on them for 2d6 damage.

9 - An enemy of your choice makes a wisdom saving throw against your spell save DC or becomes frightened until your next turn.

10 - You create 1 magic missile that deals 1d4+1 damage to an enemy of your choice.

11 - You restore 2D4 health to all allies who can hear you.

12 - You roll again and double the effect unless its another 12 wherein you roll again until you can double the effect.