Depending on who you ask, they can technically mean different things (blinking is end-of-turn return, flicker is instant return) but they're often used in the same way so I'm just going to be bouncing between the two here and there
A non-foil Realms and Relics card will show up in approximately 31% of Collector Boosters, while a surge foil Realms and Relics card will show up in slightly under 1% of Collector Boosters
Plus, Summon: Primal Odin is a must-kill threat from our opponent's perspective, which makes our reanimation especially important since it gives us a way to keep getting Summon: Primal Odin into play if our opponent manages to kill it
Progenitor Mimic - This one is cheating a little because it's more a clone than a token generator on ETB, but by flickering, you can routinely change up what kinds of tokens you're making, which is always a big help
Equip only as a sorcery.) Equip (: Attach to target creature you control