It is unfortunate how this is most likely to trigger and grant lifelink after combat damage. I also am quite certain the last ability doesn't work due to layers.

See also Hideous Creeper and this explanation of why its ability had to change.

Fortunately you could just merge these to "Whenever another creature you control dies, creatures you control get +0/+1 until end of turn. Then creatures you control with a toughness of 5 or greater gain lifelink until end of turn."

Either way the design flaw remains.

I'm confused about the ward replacing the +0/+1. Does it solve the problem? It just means "Cast your instant speed removal before this trigger resolves."

You have ten multicolor uncommons, so I'm going to assume this is a signpost uncommon. But I don't know for what. Originally, I thought the toughness was important, but apparently this is for an aristocrats-theme? Or maybe lifelink (or lifeline?)?

Maybe I'm not familiar enough with the cards to find the theme.

I like the adipocer-mention. You definitely could have a grave wax candle or something, too.

I thought Ward would at least make targeting multiple creatures for removal with different spells more difficult in the same turn. Obviously the first creature will die, but it'd press the opponent to use any other removal spells while the first one is still on the stack, so that opponent could avoid Ward costs.

There's no aristocrats theme. I was going off the "Activate this ability only if a creature died this turn" clause that many of the Monuments have. Like Barrel Hill Cemetery this card is supposed to be the BW creature signpost for monuments. Admittedly, that defeats my own purpose of 20 signpost cards that are supposed to more varied playstyles between the creature and noncreature cards of the color pairing.

The lifelink (I have an add-on that autocorrects and "lifelink" to "lifeline" is one of the victims) was added because without any guarantee activations, the card did nothing.