Alistar vs Nami

Cast Pulverize (Q) during the Headbutt (W) charge: it's your core engage, and the target takes a knock-up as soon as you arrive.

Stay in melee range during Trample (E): each pulse that hits a champion gives you a stack, and at max stacks your next auto stuns.

Get behind your target, then cast Headbutt (W) toward your team: the charge knocks them back along your path, straight into your allies.

Cast Unbreakable Will (R) when you dive under a tower or get focused: it removes all CC on you and reduces the damage you take.

Change direction when she casts Aqua Prison (Q), then step up if she misses: it's her only stun outside her ult, on a 12 to 8 second cooldown.

Avoid trading when she casts Tidecaller's Blessing (E) on her ally: their next autos and abilities slow you and deal more damage.

Step out to the side of Tidal Wave (R): it travels a long way but moves slowly, and its slow lasts longer the more distance it has covered.

If you can engage, target Nami when she steps up: with no dash or leap, she can only walk away.