For each heads, a1a-3-celebi-ex will deal 50 damage, so having 2 Energy cards means you can push up to 100 damage
Incapsula incident ID: 1021000030042316169-55800709097783538
6 Heatran Double Damage When Angry Things get pretty hot when Heatran is on the field
They achieve victory by depriving players of key pieces, slowly whittling down their resources, and often using their own cards against them
If you want to enter the end phase = you can confirm that you have no intention of fighting, then you can drag it into the battle phase, so you can force a suicide attack relatively safely
But especially in the 100 card singleton formats, getting a chance to take the best situational target out of anybodys deck is going to have a much better strike rate than hoping they incidentally put the one creature you need into play and left it targetable