This is not really a rules question. It would be best to move this topic to the correct forum.
Red as a color has no access to lifelink - you have to add a color, skip having lifelink or go colorless. Here is a list of colorless cards that have lifelink:
December 27, 2019 4:24 a.m.
@Ethan_Wallace: This thread was moved to the Deck Help forum
December 31, 2019 2:03 p.m.
Aetherflux Reservoir , Aethersphere Harvester , Prism Ring , Umezawa's Jitte , Dragon's Claw , Tablet of the Guilds , Staff of the Flame Magus , Batterskull , Loxodon Warhammer , Wurmcoil Engine , Delif's Cone , Soul Net , Sylvok Lifestaff , Basilisk Collar , Bubbling Cauldron , and Profane Memento are probably about as close as you'll get.
December 31, 2019 5:07 p.m.
Let's take a step back. Why do you want lifelink for all of your creatures?
January 1, 2020 6:09 p.m.
Toolmaster, I want lifeline because it adds survivabitly to my deck