Wildborn Preserver

Text:

Flash
Reach
Whenever another non-Human creature enters the battlefield under your control, you may pay . When you do, put X +1/+1 counters on Wildborn Preserver.

Rulings:

• 10/4/2019 If you pay <img src="/Handlers/Image.ashx?size=small&amp;name=X&amp;type=symbol" alt="Variable Colorless" align="absbottom" /> while Wildborn Preserver’s triggered ability is resolving, the reflexive triggered ability triggers and will resolve separately. This is different from effects that say “If you do . . .” in that players may take actions after you’ve paid mana but before the creature gets +1/+1 counters.