Dragon Warrior IV NES Chance Effects and Stats

Data acquired from a few days of reloading save states in PocketNES, and keeping track of every result. Fights were mainly vs Metal Babbles in Sacred Tomb.

0.30%	All Allies Agility goes up	1/370
0.30%	Chance echoes, no other effect	1/370
0.30%	Return to random town	1/370
0.80%	All enemies and allies are put to sleep	3/370
1.10%	All Enemies and all Allies MP reduced to 0	4/370
1.60%	Chaos on all Enemies and all Allies	6/370
1.60%	Earthquake! All Enemies and all Allies take ~60 damage	6/370
1.90%	Blinding Light: 80%-150% of max hp in damage to caster	7/370
2.20%	All Enemies and all Allies build up power (x2 next turn)	8/370
2.70%	Allies Morale is boosted (Crit rate goes up)	10/370
2.70%	Healall all Allies	10/370
3.20%	Caster calls Most fearful thing, Allies faint, Enemies run	12/370
3.50%	x2 XP & Gold at end of battle (though it only says money)	13/370
4.10%	Earthquake too! All Enemies die (XP given)	15/370
4.90%	Bedragon on all Allies	18/370
5.10%	Time Stops, only caster acts for 3 turns	19/370
5.40%	Hideous Grumble heard, Allies lose a turn	20/370
5.40%	All Enemies explode into bits! (No xp earned)	20/370
5.40%	Monstrous Giant laughs and attacks all Enemies for ~110	20/370
5.90%	Blinding Lights; White Dragon kills all Enemies (no xp)	22/370
6.20%	Surround on all Enemies	23/370
7.00%	Time regresses 1 turn (As Sandglass of Regression)	26/370
7.60%	All Enemies turn into Metal Slimes	28/370
7.80%	Eerie mists stream out of caster (Fendspell on all)	29/370
13.00%	All Allies Defense goes up (Upper)	48/370