Well, maby some pritty realistic nuke
Like you first see a bright flash (White out 5 seconds)
You hear an explosion sound, the first radius impact hits you, burning you and slowly drawing health
and if your (too) close to the explosion inpact, youll just be instantly.
and if your far away youll still have a shockwave, if you want to do some realistic damage to bricks you should build it up in layers to reduce lag.
/support