When Ambassador Oak enters the battlefield, create a 1/1 green Elf Warrior creature token.
Related products

from $5.99
Brushland
The Brothers' War
{T}: Add {C}. {T}: Add {G} or {W}. Brushland deals 1 damage to you.

from $0.99
Anointed Peacekeeper
Dominaria United
Vigilance As Anointed Peacekeeper enters the battlefield, look at an opponent's hand, then choose any card name. Spells your opponents cast with th...
View full details
from $1.39
Pithing Needle
Innistrad: Midnight Hunt
As Pithing Needle enters the battlefield, choose a card name. Activated abilities of sources with the chosen name can't be activated unless they're...
View full details
from $0.99
Nadir Kraken
Theros Beyond Death
Whenever you draw a card, you may pay {1}. If you do, put a +1/+1 counter on Nadir Kraken and create a 1/1 blue Tentacle creature token.

from $0.59
Mystical Dispute
Throne of Eldraine
This spell costs {2} less to cast if it targets a blue spell. Counter target spell unless its controller pays {3}.