Alan Kwan wrote:
Using Blooming Elm, can I target an illusion which already has a +1/+1 rune in order to destroy it? The wording is ambiguous, because "if" can be taken to mean that the ability can be targeted at said target with no effect (of adding the +1/+1 runes).
A few other cards also use this "if" wording.
I think sharpo and Sirlin ruled that you can target a unit with +1/+1 runes with Blooming Elm. It just doesn't add any runes. I will ask them on Discord to get a confirmation.