Admiral Magellan

Admiral Magellan enters the battlefield with X
+1/+1 counters. These counters remain on
Magellan as it moves from any zone other than
a player's hand or library.
At the beginning of combat on your turn, you
may have Y target vehicles you control become
artifact creatures with Haste, Flying, Vigilance
and "When this creature attacks, defending player
loses life equal to the number of non-basic lands
they control." until end of turn, where Y is
Admiral Magellan's power.