I think First Strike would be more on flavor than Doublestrike for Blue-Eyes, but I like combining Menace with Flying (and the pro-weenies), it makes Blue-Eyes very hard and costly to block, but like in Yugioh it doesn't come with Fairy Meteor Crush stapled to it, so no Trample is on theme
Magical Dimension - If you control a Spellcaster monster: Target 1 monster you control
Minthara, Merciless Soul Minthara, Merciless Soul brings the experience counter mechanic to clerics in a sneaky and powerful way
A rare example of a planeswalker that is just so powerful that the ultimate is pretty irrelevant
Ornery Tumblewagg Ornery Tumblewagg should play well alongside a +1/+1 counters commander, with this green creature being able to spread the counters and even becoming a counter doubler if it attacks while saddled
You can drop something that you can't cast yet, such as Ugin, the Spirit Dragon