Gandalf, Spark Starter

Gone Fishing blinks Gandalf to immediately retrigger his divided 3 damage while also blinking a second permanent for value.

Each Saga chapter can blink Gandalf, repeatedly generating his divided 3-damage enters trigger without requiring him to be recast.

Returning Gandalf to hand converts one card into repeated 3-damage enter-the-battlefield triggers.

Elrond's activated ability can blink Gandalf, producing another divided 3-damage enters trigger while temporarily protecting him.

When Gandalf's enters trigger kills opposing creatures, Head of the Hunt exiles each instead and creates a 2/2 Wolf, turning Gandalf's removal into additional board presence.

Glóin's recurring {R}{R} supplies Gandalf's exact colored requirement and lets four lands produce the remaining mana, accelerating this powerful six-drop by a turn.

Casting six-mana Gandalf triggers Dancing from Dark to Dawn for six +1/+1 counters on another creature, while Gandalf's divided damage helps stabilize the board so that enormous tempo swing can take over the game.

Radagast reduces Gandalf's creature-spell cost by {2}, letting this six-mana removal threat arrive a turn earlier, and flash allows Gandalf's divided damage to disrupt combat.

After Gandalf's divided damage kills one or more opposing creatures, Supper for Spiders can immediately return every creature killed that turn under your control as Food artifacts, converting his removal trigger into additional material and life gain.

Gandalf, Spark Starter is a Wizard that can unlock the cards exiled by Flameshape if Goblins' Bane has been removed or cannot be deployed.

Mirkwood Nurturer can return Gandalf to your hand while growing itself, allowing you to recast Gandalf later for another divided 3-damage enters trigger.