遺(い)伝(でん)子(し)変(へん)異(い)の成(せい)虫(ちゅう)

Flying

Landfall − Whenever a land you control enters, target creature has base power and toughness 3/3 until end of turn. If you control six or more lands, that creature has base power and toughness 6/6 until end of turn instead.