Stud

First Strike, Trample
When Stud deals combat damage to a player create
a Pump token: Create an artifact token with "{t},
sacrifice: put a +1/+1 counter on target creature"
If Stud is unblocked you may put a +1/+1
Counter on Stud, then it deals 1 damage to you
for each +1/+1 counter on Stud.

Dash {1}{r}: You may cast Stud for it's dash cost,
then it gains haste and return it to your hand at end
of turn.