Blitzheart Rider

Flying, Trample, Hexproof
On your upkeep, target creature you control gains any ability you choose until end of turn.
Each land you control, put a scale counter on it. For each scale counter a land has, if it taps for mana, put a gold 5/5 wyvern token on the battlefield. Scale counters do not leave the battlefield if Blitz Heart Rider leaves the battlefield.