My Stellacorn moves into a bf vs Ezreal. He plays Stupify to make me 2 might vs his 3. I play Counter-Strike to negate damage. Since I have less might I lost the showdown and my Stella moves back to base. Do I draw a card, is it a recall?

1. The Chain and Resolution

When you move your Stellacorn into the battlefield with Ezreal, a showdown begins.

• Stupefy is played, creating a chain.
• You play Counter Strike in response, adding it to the chain.

Because the chain resolves in LIFO (Last-In, First-Out) order:

1. Counter Strike resolves first: You choose your Stellacorn. It gains a delayed replacement effect: "The next time that unit would be dealt damage this turn, prevent it." You then draw 1 card.
2. Stupefy resolves next: Your Stellacorn receives -1 Might this turn.

2. Combat and Damage

• Damage Application: If Ezreal deals damage to your Stellacorn, the Counter Strike effect triggers. The damage is prevented. Because the damage is prevented, it is not considered to have been dealt to your unit at all (Rule 437.4).

3. Combat Resolution and Recall

• Might Check: Your Stellacorn has 2 Might (3 base - 1 from Stupefy). Ezreal has 3 Might.
• Combat Damage Step: Since your Stellacorn is not stunned, it contributes its 2 Might to the combat damage. Ezreal contributes his 3 Might.
• Outcome: Because Ezreal has more Might than your Stellacorn, your Stellacorn is removed from the battlefield.
• Recall: According to Rule 453.1 and FAQ #338, when a unit is removed from the battlefield in this manner, it returns to your base via a recall.

Summary

• Do I draw a card? Yes. You draw 1 card when Counter Strike resolves.
• Is it a recall? Yes. Your Stellacorn returns to your base via a recall. Per Rule 453.1, this recall does not change the state of your unit (it remains exhausted if it was exhausted to move, and it retains any remaining effects like the -1 Might from Stupefy until the end of the turn).
• Does a recall count as a move? No. Per Patch Notes 2025-10-24 and FAQ #338, recalls are not considered moves, so they do not trigger abilities that activate upon moving.

Note: I could not fully verify this ruling against the retrieved rules.