mtg avacyn restored cards Exquisite Blood then return that card to the battlefield under your control. Magic the Gathering [102] AVACYN

I would say keep it as is, but here's some of the other options for you, and also an alternative to cursecatcher (if you do run catchers, then take out the tidebinder mages or harbinger of the tides for them)

As previously mentioned, mono-blue and mono-red have virtually zero cards which gain life (in the case of red, actually zero)

You do nothing unless you are accelerating something out, so don't keep a hand unless it promises to do that

You can also find traditional foil and galaxy foil versions of these lands in Collector Boosters

When players discuss cards to unban in various formats, Splinter Twin is often one of the first cards named