Baxter Stockman

First strike (This creature deals combat damage before creatures without first strike.)

Reach (This creature can block creatures with flying.)

At the beginning of combat on your turn, put X +1/+1 counters on another target creature you control, where X is Halana and Alena's power. That creature gains haste until end of turn.

At the beginning of combat on your turn, create a 1/1 colorless Thopter artifact creature token with flying. It gains haste until end of turn. Sacrifice it at the beginning of your next end step.

Menace

At the beginning of combat on your turn, target creature you control gains menace and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard.

At the beginning of your end step, if you control two or more tapped creatures, create a tapped 2/2 colorless Robot artifact creature token.

At the beginning of combat on your turn, another target creature you control gains haste and myriad until end of turn. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Landfall — Whenever a land you control enters, target creature gets +1/+1 until end of turn. Then if that creature has power 4 or greater, it gains first strike until end of turn.